List of Chromium Command Line Switches

There are lots of command lines which can be used with the Google Chrome browser. Some change behavior of features, others are for debugging or experimenting. This page lists the available switches including their conditions and descriptions. Last automated update occurred on 2014-10-20.

Condition Explanation
--0 Value of the --profiler-timing flag that will disable timing information for chrome://profiler.
--allow-autofill-sync-credential Force the password manager to allow sync credentials to be autofilled.
--allow-cross-origin-auth-prompt Allows third-party content included on a page to prompt for a HTTP basic auth username/password pair.
--allow-external-pages Allow access to external pages during layout tests.
--allow-file-access On ChromeOS, file:// access is disabled except for certain whitelisted directories. This switch re-enables file:// for testing.
--allow-file-access-from-files By default, file:// URIs cannot read other file:// URIs. This is an override for developers who need the old behavior for testing.
--allow-http-background-page Allows non-https URL for background_page for hosted apps.
--allow-http-screen-capture Allow non-secure origins to use the screen capture API and the desktopCapture extension API.
--allow-insecure-websocket-from-https-origin Allows frames with an https origin to use WebSockets with an insecure URL (ws://).
--allow-legacy-extension-manifests Allows the browser to load extensions that lack a modern manifest when that would otherwise be forbidden.
--allow-loopback-in-peer-connection Allows loopback interface to be added in network list for peer connection.
--allow-nacl-crxfs-api[1] Specifies comma-separated list of extension ids or hosts to grant access to CRX file system APIs.
--allow-nacl-file-handle-api[1] Specifies comma-separated list of extension ids or hosts to grant access to file handle APIs.
--allow-nacl-socket-api[1] Specifies comma-separated list of extension ids or hosts to grant access to TCP/UDP socket APIs.
--allow-no-sandbox-job Enables the sandboxed processes to run without a job object assigned to them. This flag is required to allow Chrome to run in RemoteApps or Citrix. This flag can reduce the security of the sandboxed processes and allow them to do certain API calls like shut down Windows or access the clipboard. Also we lose the chance to kill some processes until the outer job that owns them finishes.
--allow-outdated-plugins Don't block outdated plugins.
--allow-running-insecure-content By default, an https page cannot run JavaScript, CSS or plug-ins from http URLs. This provides an override to get the old insecure behavior.
--allow-sandbox-debugging Allows debugging of sandboxed processes (see zygote_main_linux.cc).
--alsa-input-device[2] The Alsa device to use when opening an audio input stream.
--alsa-output-device[2] The Alsa device to use when opening an audio stream.
--also-emit-success-logs Also emit full event trace logs for successful tests.
--alternate-protocol-probability-threshold Specifies the threshold to be used when determining of an Alternate-Protocol advertisement will be honored. If the advertised probability is larger than the threshold, then it will be honored.
--always-authorize-plugins Prevents Chrome from requiring authorization to run certain widely installed but less commonly used plug-ins.
--app Specifies that the associated value should be launched in "application" mode.
--app-id Specifies that the extension-app with the specified id should be launched according to its configuration.
--app-list-start-page-url Specifies an URL to use for app list start page.
--app-mode-auth-code Value of GAIA auth code for --force-app-mode.
--app-mode-oauth-token Value of OAuth2 refresh token for --force-app-mode.
--app-mode-oem-manifest Path for app's OEM manifest file.
--app-shell-app-path Path to an app to load at startup.
--app-shell-host-window-bounds Bounds for the host window to create (i.e. "800x600").
--app-shell-preferred-network SSID of the preferred WiFi network.
--apple No description
--apps-checkout-url Overrides the apps checkout URL, which is used to determine when to expose some private APIs.
--apps-keep-chrome-alive-in-tests[3] Prevents Chrome from quitting when Chrome Apps are open.
--args-for Specify configuration arguments for a Mojo application URL. For example: --args-for='mojo://wget http://www.google.com'
--artifacts-dir Screenshot testing: specifies the directoru where artifacts will be stored.
--ash-animate-from-boot-splash-screen Enables an animated transition from the boot splash screen (Chrome logo on a white background) to the login screen. Implies |kAshCopyHostBackgroundAtBoot| and doesn't make much sense if used in conjunction with |kDisableBootAnimation| (since the transition begins at the same time as the white/grayscale login screen animation).
--ash-browsertests[4] Force browser tests to run in Ash/Metro on Windows 8.
--ash-constrain-pointer-to-root Constrains the pointer movement within a root window on desktop.
--ash-copy-host-background-at-boot Copies the host window's content to the system background layer at startup. Can make boot slightly slower, but also hides an even-longer awkward period where we display a white background if the login wallpaper takes a long time to load.
--ash-debug-shortcuts Enable keyboard shortcuts useful for debugging.
--ash-default-wallpaper-is-oem Indicates that the wallpaper images specified by kAshDefaultWallpaper{Large,Small} are OEM-specific (i.e. they are not downloadable from Google).
--ash-default-wallpaper-large Default wallpaper to use (as paths to trusted, non-user-writable JPEG files).
--ash-default-wallpaper-small No description
--ash-disable-lock-layout-manager Disables LockLayoutManager used for LockScreenContainer, return back to WorkspaceLayoutManager.
--ash-disable-text-filtering-in-overview-mode Enables text filtering with the keyboard in Overview Mode.
--ash-disable-touch-exploration-mode Disable the Touch Exploration Mode. Touch Exploration Mode will no longer be turned on automatically when spoken feedback is enabled when this flag is set.
--ash-enable-magnifier-key-scroller[5] Enables key bindings to scroll magnified screen.
--ash-enable-power-button-quick-lock Enables quick, non-cancellable locking of the screen when in maximize mode.
--ash-enable-software-mirroring Enables software based mirroring.
--ash-enable-system-sounds When this flag is set, system sounds will be played whether the ChromeVox is enabled or not.
--ash-enable-touch-view-testing Enables touch view testing. TODO(skuhne): Remove TOGGLE_TOUCH_VIEW_TESTING accelerator once this flag is removed.
--ash-enable-tray-dragging Enables showing the tray bubble by dragging on the shelf.
--ash-force-desktop[4] Force Ash to open its root window on the desktop, even on Windows 8 where it would normally end up in metro.
--ash-guest-wallpaper-large Wallpaper to use in guest mode (as paths to trusted, non-user-writable JPEG files).
--ash-guest-wallpaper-small No description
--ash-hide-notifications-for-factory Hides notifications that are irrelevant to Chrome OS device factory testing, such as battery level updates.
--ash-host-window-bounds Sets a window size, optional position, and optional scale factor. "1024x768" creates a window of size 1024x768. "100+200-1024x768" positions the window at 100,200. "1024x768*2" sets the scale factor to 2 for a high DPI display.
--ash-secondary-display-layout Specifies the layout mode and offsets for the secondary display for testing. The format is "<t|r|b|l>,<offset>" where t=TOP, r=RIGHT, b=BOTTOM and L=LEFT. For example, 'r,-100' means the secondary display is positioned on the right with -100 offset. (above than primary)
--ash-touch-hud Enables the heads-up display for tracking touch points.
--ash-use-first-display-as-internal Uses the 1st display in --ash-host-window-bounds as internal display. This is for debugging on linux desktop.
--ash-webui-init When wallpaper boot animation is not disabled this switch is used to override OOBE/sign in WebUI init type. Possible values: parallel|postpone. Default: parallel.
--assert-test Causes the browser process to throw an assertion on startup.
--async-touchmove No description
--audio-buffer-size Allow users to specify a custom buffer size for debugging purpose.
--aura-legacy-power-button (Most) Chrome OS hardware reports ACPI power button releases correctly. Standard hardware reports releases immediately after presses. If set, we lock the screen or shutdown the system immediately in response to a press instead of displaying an interactive animation.
--auth-ext-path Enables overriding the path for the default authentication extension.
--auth-negotiate-delegate-whitelist Whitelist of servers that Negotiate will generate delegated Kerberos tickets for.
--auth-schemes HTTP authentication schemes to enable. This is a comma-separated list of authentication schemes (basic, digest, ntlm, and negotiate). By default all schemes are enabled. The primary use of this command line flag is to help triage authentication-related issues reported by end-users.
--auth-server-whitelist Whitelist of servers which NTLM and Negotiate can automatically authenticate with using the default credentials of the currently logged in user.
--auto The values the kTouchEvents switch may have, as in --touch-events=disabled. auto: enabled at startup when an attached touchscreen is present.
--auto-launch-at-startup A flag that is used to tell Chrome that it was launched automatically at computer startup and not by some user action.
--auto-select-desktop-capture-source This flag makes Chrome auto-select the provided choice when an extension asks permission to start desktop capture. Should only be used for tests. For instance, --auto-select-desktop-capture-source="Entire screen" will automatically select to share the entire screen in English locales.
--block-cross-site-documents Block cross-site documents (i.e., HTML/XML/JSON) from being loaded in subresources when a document is not supposed to read them. This will later allow us to block them from the entire renderer process when site isolation is enabled.
--bootstrap Values for the kExtensionContentVerification flag. See ContentVerifierDelegate::Mode for more explanation.
--browser-subprocess-path Path to the exe to run for the renderer and plugin subprocesses.
--browser-test Tells Content Shell that it's running as a content_browsertest.
--bwsi Indicates that the browser is in "browse without sign-in" (Guest session) mode. Should completely disable extensions, sync and bookmarks.
--canvas-msaa-sample-count The number of MSAA samples for canvas2D. Requires MSAA support by GPU to have an effect. 0 disables MSAA.
--cc-layer-tree-test-no-timeout Prevents the layer tree unit tests from timing out.
--cc-rebaseline-pixeltests Makes pixel tests write their output instead of read it.
--certificate-transparency-log Certificate Transparency: Uses the provided log(s) for checking Signed Certificate Timestamps provided with certificates. The switch's value is: log_description:log_key,log_description:log_key,... where log_description is a textual description of the log. log_key is a Base64'd DER-encoded SubjectPublicKeyInfo of the log's public key. Multiple logs can be specified by repeating description:key pairs, separated by a comma.
--channel The value of this switch tells the child process which IPC channel the browser expects to use to communicate with it.
--check-cloud-print-connector-policy Checks the cloud print connector policy, informing the service process if the policy is set to disallow the connector, then quits.
--check-for-update-interval How often (in seconds) to check for updates. Should only be used for testing purposes.
--check-layout-test-sys-deps Check whether all system dependencies for running layout tests are met.
--child-process-type Used to specify the type of child process (switch values from |ChildProcess::Type|).
--cipher-suite-blacklist Comma-separated list of SSL cipher suites to disable.
--clear-token-service Clears the token service before using it. This allows simulating the expiration of credentials during testing.
--cloud-devices-url The URL of the cloud devices service to use.
--cloud-print-file Tells chrome to display the cloud print dialog and upload the specified file for printing.
--cloud-print-file-type Specifies the mime type to be used when uploading data from the file referenced by cloud-print-file. Defaults to "application/pdf" if unspecified.
--cloud-print-job-title Used with kCloudPrintFile to specify a title for the resulting print job.
--cloud-print-print-ticket Used with kCloudPrintFile to specify a JSON print ticket for the resulting print job. Defaults to null if unspecified.
--cloud-print-setup-proxy Setup cloud print proxy for provided printers. This does not start service or register proxy for autostart.
--cloud-print-url The URL of the cloud print service to use, overrides any value stored in preferences, and the default. Only used if the cloud print service has been enabled. Used for testing.
--cloud-print-xmpp-endpoint The XMPP endpoint the cloud print service will use. Only used if the cloud print service has been enabled. Used for testing.
--compensate-for-unstable-pinch-zoom Enable compensation for unstable pinch zoom. Some touch screens display significant amount of wobble when moving a finger in a straight line. This makes two finger scroll trigger an oscillating pinch zoom. See crbug.com/394380 for details.
--compile-shader-always-succeeds Always return success when compiling a shader. Linking will still fail.
--component-updater Comma-separated options to troubleshoot the component updater. Only valid for the browser process.
--composite-to-mailbox Causes the compositor to render to textures which are then sent to the parent through the texture mailbox mechanism. Requires --enable-compositor-frame-message.
--connect-to-metro-viewer On Windows only: requests that Chrome connect to the running Metro viewer process.
--console No description
--consumer-device-management-url Specifies the URL of the consumer device management backend.
--content-handlers Comma separated list like: text/html,mojo://html_viewer,application/bravo,https://abarth.com/bravo
--copresence-server Address for calls to the Copresence server (via Apiary). Defaults to https://www.googleapis.com/copresence/v2/copresence.
--copresence-tracing-token Apiary tracing token for calls to the Copresence server.
--crash-dumps-dir The directory breakpad should store minidumps in.
--crash-on-failure When specified to "enable-leak-detection" command-line option, causes the leak detector to cause immediate crash when found leak.
--crash-on-hang-threads Comma-separated list of BrowserThreads that cause browser process to crash if the given browser thread is not responsive. UI,IO,DB,FILE,CACHE are the list of BrowserThreads that are supported. For example: --crash-on-hang-threads=UI:3:18,IO:3:18 --> Crash the browser if UI or IO is not responsive for 18 seconds and the number of browser threads that are responding is less than or equal to 3.
--crash-test Causes the browser process to crash on startup.
--create-browser-on-startup-for-tests Some platforms like ChromeOS default to empty desktop. Browser tests may need to add this switch so that at least one browser instance is created on startup. TODO(nkostylev): Investigate if this switch could be removed. (http://crbug.com/148675)
--custom-launcher-page Specifies the chrome-extension:// URL for the contents of an additional page added to the experimental app launcher.
--data-path Makes Content Shell use the given path for its data directory.
--data-reduction-proxy-alternative The origin of an alternative data reduction proxy.
--data-reduction-proxy-alternative-fallback The origin of an alternative data reduction proxy fallback.
--data-reduction-proxy-probe-url Sets a canary URL to test before committing to using the data reduction proxy. Note this canary does not go through the data reduction proxy.
--data-reduction-proxy-warmup-url Sets a URL to fetch to warm up the data reduction proxy on startup and network changes.
--data-reduction-ssl-proxy The origin of the data reduction SSL proxy.
--dbus-stub Forces the stub implementation of dbus clients.
--dbus-unstub-clients Comma-spearated list of dbus clients that should be unstubbed. See chromeos/dbus/dbus_client_bundle.cc for the names of the dbus clients.
--debug-enable-frame-toggle Enables a frame context menu item that toggles the frame in and out of glass mode (Windows Vista and up only).
--debug-packed-apps Adds debugging entries such as Inspect Element to context menus of packed apps.
--debug-plugin-loading Dumps extra logging about plugin loading to the log file.
--debug-print[6] Enables support to debug printing subsystem.
--default-tile-height No description
--default-tile-width Sets the tile size used by composited layers.
--delete No description
--derelict-detection-timeout Time before a machine at OOBE is considered derelict.
--derelict-idle-timeout Time before a derelict machines starts demo mode.
--desktop No description
--device-management-url Specifies the URL at which to fetch configuration policy from the device management backend.
--device-scale-factor[4] Device scale factor passed to certain processes like renderers, etc.
--diagnostics Triggers a plethora of diagnostic modes.
--diagnostics-format Sets the output format for diagnostic modes enabled by diagnostics flag.
--diagnostics-recovery Tells the diagnostics mode to do the requested recovery step(s).
--disable-3d-apis Disables client-visible 3D APIs, in particular WebGL and Pepper 3D. This is controlled by policy and is kept separate from the other enable/disable switches to avoid accidentally regressing the policy support for controlling access to these APIs.
--disable-about-in-settings When kEnableSettingsWindow is used, About is shown as an overlay in Settings instead of as a separate page, unless this flag is specified.
--disable-accelerated-2d-canvas Disable gpu-accelerated 2d canvas.
--disable-accelerated-video-decode Disables hardware acceleration of video decode, where available.
--disable-account-consistency Disables consistent identity features.
--disable-answers-in-suggest Disables the experimental Answers in Suggest feature.
--disable-app-list-app-info If set, the app info context menu item is not available in the app list UI.
--disable-application-cache Disable the ApplicationCache.
--disable-async-dns Disables the experimental asynchronous DNS client.
--disable-audio-track-processing[7] Disables audio processing in a MediaStreamTrack. When this flag is on, AEC, NS and AGC will be done in PeerConnection instead of MediaStreamTrack.
--disable-auth-negotiate-cname-lookup Disables CNAME lookup of the host when generating the Kerberos SPN for a Negotiate challenge. See HttpAuthHandlerNegotiate::CreateSPN for more background.
--disable-background-networking Disable several subsystems which run network requests in the background. This is for use when doing network performance testing to avoid noise in the measurements.
--disable-backing-store-limit Disable limits on the number of backing stores. Can prevent blinking for users with many windows/tabs and lots of memory.
--disable-boot-animation Disables wallpaper boot animation (except of OOBE case).
--disable-breakpad Disables the crash reporting.
--disable-bundled-ppapi-flash Disables the bundled PPAPI version of Flash.
--disable-cache Force dynamically loaded apps / services to be loaded irrespective of cache instructions.
--disable-canvas-aa Disable antialiasing on 2d canvas.
--disable-cast[8] Disables support for playing videos on Chromecast devices.
--disable-click-delay[8] Disable the click delay by sending click events during double tap.
--disable-client-side-phishing-detection Disables the client-side phishing detection feature. Note that even if client-side phishing detection is enabled, it will only be active if the user has opted in to UMA stats and SafeBrowsing is enabled in the preferences.
--disable-component-cloud-policy Disables fetching and storing cloud policy for components.
--disable-component-extensions-with-background-pages Disable default component extensions with background pages - useful for performance tests where these pages may interfere with perf results.
--disable-component-update No description
--disable-composited-antialiasing Disables layer-edge anti-aliasing in the compositor.
--disable-confirmation No description
--disable-core-animation-plugins[9] Disables support for Core Animation plugins. This is triggered when accelerated compositing is disabled. See http://crbug.com/122430 .
--disable-d3d11 Disables use of D3D11.
--disable-databases Disables HTML5 DB support.
--disable-default-apps Disables installation of default apps on first run. This is used during automated testing.
--disable-delegated-renderer Disables delegated renderer.
--disable-demo-mode Disables the ChromeOS demo.
--disable-device-discovery-notifications Disables device discovery notifications.
--disable-direct-npapi-requests Handles URL requests by NPAPI plugins through the renderer.
--disable-direct-write[4] Disables the DirectWrite font rendering system on windows.
--disable-display-color-calibration[5] No description
--disable-display-list-2d-canvas No description
--disable-distance-field-text Disables distance field text.
--disable-domain-reliability Disables Domain Reliability Monitoring.
--disable-drive-apps-in-app-list If set, Drive apps will not be shown side-by-side with Chrome apps.
--disable-drop-sync-credential Disable dropping the credential used to sync passwords.
--disable-dwm-composition Disables use of DWM composition for top level windows.
--disable-easy-signin Disable Easy sign-in.
--disable-extensions Disable extensions.
--disable-extensions-file-access-check Disable checking for user opt-in for extensions that want to inject script into file URLs (ie, always allow it). This is used during automated testing.
--disable-extensions-http-throttling Disable the net::URLRequestThrottlerManager functionality for requests originating from extensions.
--disable-file-system Disable FileSystem API.
--disable-flash-3d Disable 3D inside of flapper.
--disable-flash-stage3d Disable Stage3D inside of flapper.
--disable-gaia-services Disable GAIA services such as enrollment and OAuth session restore. Used by 'fake' telemetry login.
--disable-gesture-requirement-for-media-playback[8] Disable user gesture requirement for media playback.
--disable-gl-drawing-for-tests Disables GL drawing operations which produce pixel output. With this the GL output will not be correct but tests will run faster.
--disable-gl-error-limit Disable the GL error log limit.
--disable-glsl-translator Disable the GLSL translator.
--disable-gpu Disables GPU hardware acceleration. If software renderer is not in place, then the GPU process won't launch.
--disable-gpu-compositing Prevent the compositor from using its GPU implementation.
--disable-gpu-driver-bug-workarounds Disable workarounds for various GPU driver bugs.
--disable-gpu-program-cache Turn off gpu program caching
--disable-gpu-rasterization Disable GPU rasterization, i.e. rasterize on the CPU only. Overrides the kEnableGpuRasterization and kForceGpuRasterization flags.
--disable-gpu-sandbox Disable the GPU process sandbox.
--disable-gpu-shader-disk-cache Disables the GPU shader on disk cache.
--disable-gpu-vsync Stop the GPU from synchronizing on the vsync before presenting.
--disable-gpu-watchdog Disable the thread that crashes the GPU process if it stops responding to messages.
--disable-hang-monitor Suppresses hang monitor dialogs in renderer processes. This may allow slow unload handlers on a page to prevent the tab from closing, but the Task Manager can be used to terminate the offending process in this case.
--disable-harfbuzz-rendertext Disables the HarfBuzz port of RenderText on all platforms.
--disable-hid-detection-on-oobe Disable HID-detection OOBE screen.
--disable-histogram-customizer Disable the RenderThread's HistogramCustomizer.
--disable-impl-side-painting Paint content on the main thread instead of the compositor thread. Overrides the kEnableImplSidePainting flag.
--disable-infobar-for-protected-media-identifier[8] Disables the infobar popup for accessing protected media identifier.
--disable-infobars Prevent infobars from appearing.
--disable-input-view No description
--disable-ipv4 No description
--disable-ipv6 No description
--disable-java Prevent Java from running.
--disable-javascript Don't execute JavaScript (browser JS like the new tab page still runs).
--disable-kill-after-bad-ipc Don't kill a child process when it sends a bad IPC message. Apart from testing, it is a bad idea from a security perspective to enable this switch.
--disable-layer-squashing Disables layer squashing.
--disable-lcd-text Disables LCD text.
--disable-legacy-window[4] Disable the Legacy Window which corresponds to the size of the WebContents.
--disable-local-storage Disable LocalStorage.
--disable-logging Force logging to be disabled. Logging is enabled by default in debug builds.
--disable-login-animations Avoid doing expensive animations upon login.
--disable-login-scroll-into-view Disable login/lock UI (user pods) scrolling into view on JS side when virtual keyboard is shown.
--disable-low-res-tiling When using CPU rasterizing disable low resolution tiling. This uses less power, particularly during animations, but more white may be seen during fast scrolling especially on slower devices.
--disable-main-frame-before-activation Disables sending the next BeginMainFrame before the previous commit activates. Overrides the kEnableMainFrameBeforeActivation flag.
--disable-manager-for-sync-signin Disable both saving and filling for the sync signin form.
--disable-material-design-ntp Disables the Material Design NTP.
--disable-media-source Disables Media Source API (i.e., the MediaSource object).
--disable-method-check No description
--disable-minimize-on-second-launcher-item-click Disable the behavior that the second click on a launcher item (the click when the item is already active) minimizes the item.
--disable-network-portal-notification Disables notifications about captive portals in session.
--disable-new-avatar-menu Disables the new avatar menu, forcing the top-corner avatar button.
--disable-new-channel-switcher-ui Disable new channel switcher UI.
--disable-new-kiosk-ui Disables new Kiosk UI when kiosk apps are represented as user pods.
--disable-new-profile-management Disables new profile management system, including new profile chooser UI.
--disable-ntp-other-sessions-menu Disables the menu on the NTP for accessing sessions from other devices.
--disable-office-editing-component-extension Disable Office Editing for Docs, Sheets & Slides component app so handlers won't be registered, making it possible to install another version for testing.
--disable-offline-auto-reload Disable auto-reload of error pages if offline.
--disable-offline-auto-reload-visible-only Disable only auto-reloading error pages when the tab is visible.
--disable-offline-load-stale-cache No description
--disable-origin-chip Disable the origin chip.
--disable-overlay-scrollbar Disables overlay scrollbars on Aura or Linux. Does nothing on Mac.
--disable-overscroll-edge-effect[8] Disable overscroll edge effects like those found in Android views.
--disable-panel-fitting[5] Disables panel fitting (used for mirror mode).
--disable-password-generation Disables password generation when we detect that the user is going through account creation.
--disable-password-manager-reauthentication Disable the setting to prompt the user for their OS account password before revealing plaintext passwords in the password manager.
--disable-pepper-3d Disable Pepper3D.
--disable-permissions-bubbles Don't use bubbles for content permissions requests instead of infobars.
--disable-pinch Disables compositor-accelerated touch-screen pinch gestures.
--disable-pinch-virtual-viewport No description
--disable-plugins Prevent plugins from running.
--disable-plugins-discovery Disable discovering third-party plug-ins. Effectively loading only ones shipped with the browser plus third-party ones as specified by --extra-plugin-dir and --load-plugin switches.
--disable-pnacl-crash-throttling Disables crash throttling for Portable Native Client.
--disable-policy-key-verification Disables the verification of policy signing keys. TODO(atwilson): Remove this once all test servers have been updated to produce verification signatures.
--disable-popup-blocking Disable pop-up blocking.
--disable-preconnect Disable speculative TCP/IP preconnection.
--disable-prefer-compositing-to-lcd-text Disable the creation of compositing layers when it would prevent LCD text.
--disable-prefixed-encrypted-media Disables prefixed Encrypted Media API (e.g. webkitGenerateKeyRequest()).
--disable-prerender-local-predictor Disable prerendering based on local browsing history.
--disable-print-preview Disables print preview (For testing, and for users who don't like us. :[ )
--disable-prompt-on-repost Normally when the user attempts to navigate to a page that was the result of a post we prompt to make sure they want to. This switch may be used to disable that check. This switch is used during automated testing.
--disable-quic Disables support for the QUIC protocol.
--disable-quic-pacing Disable use of pacing of QUIC packets. This only has an effect if QUIC protocol is enabled.
--disable-quic-port-selection Disable use of Chromium's port selection for the ephemeral port via bind(). This only has an effect if QUIC protocol is enabled.
--disable-remote-core-animation[9] Enable use of cross-process CALayers to display content directly from the GPU process on Mac.
--disable-remote-fonts Disables remote web font support. SVG font should always work whether this option is specified or not.
--disable-renderer-accessibility Turns off the accessibility in the renderer.
--disable-rollback-option Disables rollback option on reset screen.
--disable-save-password-bubble Prevents the save password bubble from being enabled.
--disable-search-button-in-omnibox Disables the "search button in omnibox" experiment.
--disable-seccomp-filter-sandbox Disable the seccomp filter sandbox (seccomp-bpf) (Linux only).
--disable-session-crashed-bubble Disables using bubbles for session restore request.
--disable-session-storage Disable session storage.
--disable-settings-window No description
--disable-setuid-sandbox Disable the setuid sandbox (Linux only).
--disable-shader-name-hashing Turn off user-defined name hashing in shaders.
--disable-shared-workers Disable shared workers.
--disable-signin-scoped-device-id Disable sending signin scoped device id to LSO with refresh token request.
--disable-single-thread-proxy-scheduler For tests, disable single thread scheduler and only manually composite.
--disable-smooth-scrolling Disable smooth scrolling for testing.
--disable-software-rasterizer Disables the use of a 3D software rasterizer.
--disable-spdy-proxy-dev-auth-origin Disables the origin of the data reduction proxy dev.
--disable-spdy31 Disable SPDY/3.1. This is a temporary testing flag.
--disable-suggestions-service Disables the suggestions service.
--disable-supervised-user-blacklist Disables the supervised user host blacklist.
--disable-sync Disables syncing browser data to a Google Account.
--disable-sync-app-list Disables syncing of the app list independent of extensions.
--disable-sync-backup Disable data backup when user's not signed in.
--disable-sync-rollback Disable sync rollback.
--disable-sync-synced-notifications Disable synced notifications.
--disable-sync-types Disables syncing one or more sync data types that are on by default. See sync/internal_api/public/base/model_type.h for possible types. Types should be comma separated, and follow the naming convention for string representation of model types, e.g.: --disable-synctypes='Typed URLs, Bookmarks, Autofill Profiles'
--disable-system-fullscreen-for-testing[3] Forcibly disables Lion-style on newer OSes, to allow developers to test the older, SnowLeopard-style fullscreen.
--disable-text-input-focus-manager Disables an experimental focus manager to track text input clients.
--disable-threaded-animation No description
--disable-threaded-compositing Disable multithreaded GPU compositing of web content.
--disable-threaded-scrolling Disable multithreaded, compositor scrolling of web content.
--disable-touch-adjustment Disables touch adjustment.
--disable-touch-drag-drop Disables touch event based drag and drop.
--disable-touch-editing Disables controls that support touch base text editing.
--disable-transition-compositing See comment for kEnableCompositingForTransition.
--disable-translate Allows disabling of translate from the command line to assist with automated browser testing (e.g. Selenium/WebDriver). Normal browser users should disable translate with the preference.
--disable-v8-idle-notification-after-commit Disable V8 idle notification after commit. Overrides kEnableV8IdleNotificationAfterCommit.
--disable-vaapi-accelerated-video-encode[5] Enables VA-API accelerated video encode.
--disable-views-rect-based-targeting Specifies if a heuristic should be used to determine the most probable target of a gesture, where the touch region is represented by a rectangle.
--disable-virtual-keyboard-overscroll No description
--disable-volume-adjust-sound Disables volume adjust sound.
--disable-web-resources Disables the backend service for web resources.
--disable-web-security Don't enforce the same-origin policy. (Used by people testing their sites.)
--disable-webaudio Disable web audio API.
--disable-webgl Disable experimental WebGL support.
--disable-webrtc[8] WebRTC is enabled by default on Android.
--disable-webrtc-encryption[7] Disables encryption of RTP Media for WebRTC. When Chrome embeds Content, it ignores this switch on its stable and beta channels.
--disable-webrtc-hw-decoding[7] Disables HW decode acceleration for WebRTC.
--disable-webrtc-hw-encoding[7] Disables HW encode acceleration for WebRTC.
--disable-x-token No description
--disable-xslt Disables support for XSLT.
--disable-xss-auditor Disables Blink's XSSAuditor. The XSSAuditor mitigates reflective XSS.
--disable-zero-browsers-open-for-tests Some tests seem to require the application to close when the last browser window is closed. Thus, we need a switch to force this behavior for ChromeOS Aura, disable "zero window mode". TODO(pkotwicz): Investigate if this bug can be removed. (http://crbug.com/119175)
--disable-zero-copy Disable rasterizer that writes directly to GPU memory associated with tiles. Overrides the kEnableZeroCopy flag.
--disable-zero-suggest[8] Disables zero suggest experiment on Dev channel.
--disabled disabled: touch events are disabled.
--disallow-autofill-sync-credential Disallow autofilling of the sync credential.
--disallow-autofill-sync-credential-for-reauth Disallow autofilling of the sync credential only for transactional reauth pages.
--disk-cache-dir Use a specific disk cache location, rather than one derived from the UserDatadir.
--disk-cache-size Forces the maximum disk space to be used by the disk cache, in bytes.
--display[10] Which X11 display to connect to. Emulates the GTK+ "--display=" command line argument.
--dns-log-details No description
--dns-prefetch-disable Disables prefetching of DNS information.
--do-not-ignore-autocomplete-off Forces the password manager to not ignore autocomplete='off' for password forms.
--dom-automation Specifies if the |DOMAutomationController| needs to be bound in the renderer. This binding happens on per-frame basis and hence can potentially be a performance bottleneck. One should only enable it when automating dom based tests.
--domain-name No description
--dump-browser-histograms Requests that a running browser process dump its collected histograms to a given file. The file is overwritten if it exists.
--dump-render-tree Request pages to be dumped as text once they finished loading.
--egl No description
--embedded-extension-options Enables extension options to be embedded in chrome://extensions rather than a new tab.
--enable-accelerated-2d-canvas Enable accelerated 2D canvas.
--enable-accelerated-jpeg-decoding Enable partially decoding jpeg images using the GPU. At least YUV decoding will be accelerated when using this flag. Has no effect unless GPU rasterization is enabled.
--enable-accessibility-tab-switcher[8] Enable the accessibility tab switcher.
--enable-account-consistency Enables consistent identity features.
--enable-answers-in-suggest Enables the experimental Answers in Suggest feature.
--enable-app-install-alerts[8] Enables app install alerts.
--enable-app-list If set, the app list will be enabled as if enabled from CWS.
--enable-app-window-controls Enables the <window-controls> tag in platform apps.
--enable-apps-file-associations Enable OS integration for Chrome app file associations.
--enable-apps-show-on-first-paint Show apps windows after the first paint. Windows will be shown significantly later for heavy apps loading resources synchronously but it will be insignificant for apps that load most of their resources asynchronously.
--enable-async-dns Enables the experimental asynchronous DNS client.
--enable-auth-negotiate-port Enables the inclusion of non-standard ports when generating the Kerberos SPN in response to a Negotiate challenge. See HttpAuthHandlerNegotiate::CreateSPN for more background.
--enable-automatic-password-saving Disables the save-password prompt. Passwords are then saved automatically, without asking the user.
--enable-avfoundation[3] AVFoundation is available in versions 10.7 and onwards, and is to be used http://crbug.com/288562 for both audio and video device monitoring and for video capture. Being a dynamically loaded NSBundle and library, it hits the Chrome startup time (http://crbug.com/311325 and http://crbug.com/311437); for experimentation purposes, in particular library load time issue, the usage of this library can be enabled by using this flag.
--enable-begin-frame-scheduling Use a BeginFrame signal from browser to renderer to schedule rendering.
--enable-benchmarking Enables the benchmarking extensions.
--enable-bleeding-edge-rendering-fast-paths Enable bleeding-edge code to make Chrome draw content faster. The changes behind this path are very likely to break lots of content. ** DO NOT use this flag unless you know what you are doing. **
--enable-bookmark-undo Enables the multi-level undo system for bookmarks.
--enable-browser-side-navigation PlzNavigate: Use the experimental browser-side navigation path.
--enable-carrier-switching Enables switching between different cellular carriers from the UI.
--enable-centered-app-list If set, the app list will be centered and wide instead of tall.
--enable-chromevox-next Enables the next generation version of ChromeVox.
--enable-client-hints Enables client hints, which adds hints about browser state to HTTP requests.
--enable-cloud-devices Enable Google Cloud Devices code.
--enable-cloud-print-proxy This applies only when the process type is "service". Enables the Cloud Print Proxy component within the service process.
--enable-cloud-print-xps[4] Fallback to XPS. By default connector uses CDD.
--enable-consumer-management Enables consumer management, which allows user to enroll, remotely lock and locate the device.
--enable-container-culling Enable experimental container node culling.
--enable-content-video-view-power-save-blocker[8] Enable the PowerSaveBlocker in ContentVideoView. Android only.
--enable-crash-reporter Indicates that crash reporting should be enabled. On platforms where helper processes cannot access to files needed to make this decision, this flag is generated internally.
--enable-crash-reporter-for-testing[11] Used for turning on Breakpad crash reporting in a debug environment where crash reporting is typically compiled but disabled.
--enable-credential-manager-api Enable the experimental Credential Manager JavaScript API.
--enable-data-reduction-proxy-alt Enable the alternative data reduction proxy.
--enable-deferred-image-decoding Defer image decoding in WebKit until painting.
--enable-delegated-renderer Enables delegated renderer.
--enable-device-discovery-notifications Enable device discovery notifications.
--enable-devtools-experiments If true devtools experimental settings are enabled.
--enable-directwrite-for-ui[4] Enables DirectWrite font rendering for general UI elements.
--enable-display-list-2d-canvas Enables display list based 2d canvas implementation.
--enable-distance-field-text Enables using signed distance fields when rendering text. Only valid if GPU rasterization is enabled as well.
--enable-dom-distiller Enables the DOM distiller.
--enable-domain-reliability Enables Domain Reliability Monitoring.
--enable-download-resumption Enables restarting interrupted downloads.
--enable-drop-sync-credential Enable dropping the credential used to sync passwords.
--enable-embedded-extension-options Hack so that feature switch can work with about_flags. See kEnableScriptsRequireAction.
--enable-embedded-signin If this switch is set, Chrome OS login screen uses |EmbeddedSignin| endpoint of GAIA.
--enable-embeddedsearch-api[8] Enables EmbeddedSearch API in the search results page.
--enable-encrypted-media Enables support for Encrypted Media Extensions (e.g. MediaKeys).
--enable-enhanced-bookmarks-sync Enable Enhanced Bookmarks sync.
--enable-ephemeral-apps Enables experimentation with ephemeral apps, which are launched without installing in Chrome.
--enable-exclusive-audio[4] Use exclusive mode audio streaming for Windows Vista and higher. Leads to lower latencies for audio streams which uses the AudioParameters::AUDIO_PCM_LOW_LATENCY audio path. See http://msdn.microsoft.com/en-us/library/windows/desktop/dd370844.aspx for details.
--enable-experimental-app-list If set, the experimental app list will be used. Implies --enable-centered-app-list.
--enable-experimental-canvas-features Enable experimental canvas features, e.g. canvas 2D context attributes
--enable-experimental-extension-apis Enables extension APIs that are in development.
--enable-experimental-hotwording Enables experimental hotword detection features. These features include using a new component extension for performing hotword detection, new UI flows, and always-on detection.
--enable-experimental-input-view-features No description
--enable-experimental-web-platform-features Enables Web Platform features that are in development.
--enable-extension-action-redesign Hack so that feature switch can work with about_flags. See kEnableScriptsRequireAction.
--enable-extension-activity-log-testing No description
--enable-extension-activity-logging Enables logging for extension activity.
--enable-extension-assets-sharing Enabled sharing assets for installed default apps.
--enable-extension-info-dialog Enables the App Info dialog to be launched from the chrome://extensions page.
--enable-external-applications Allow externally-running applications to discover, connect to, and register themselves with the shell. TODO(cmasone): Work in progress. Once we're sure this works, remove.
--enable-fast-unload Enable the fast unload controller, which speeds up tab/window close by running a tab's onunload js handler independently of the GUI - crbug.com/142458 .
--enable-file-cookies By default, cookies are not allowed on file://. They are needed for testing, for example page cycler and layout tests. See bug 1157243.
--enable-first-run-ui-transitions Enables animated transitions during first-run tutorial.
--enable-font-antialiasing Enable font antialiasing for pixel tests.
--enable-gpu-benchmarking Enables the GPU benchmarking extension
--enable-gpu-client-logging Enable GPU client logging.
--enable-gpu-client-tracing Enables TRACE for GL calls in the renderer.
--enable-gpu-command-logging Turn on Logging GPU commands.
--enable-gpu-debugging Turn on Calling GL Error after every command.
--enable-gpu-rasterization Allow heuristics to determine when a layer tile should be drawn with the Skia GPU backend. Only valid with GPU accelerated compositing + impl-side painting.
--enable-gpu-service-logging Turns on GPU logging (debug build only).
--enable-gpu-service-tracing Turns on calling TRACE for every GL call.
--enable-grouped-history Enables grouping websites by domain and filtering them by period.
--enable-handle-auditing Enumerates and prints a child process' most dangerous handles when it is terminated.
--enable-handle-auditing-all The same as kAuditHandles except all handles are enumerated.
--enable-hardware-overlays Enable compositing individual elements via hardware overlays when permitted by device.
--enable-harfbuzz-rendertext Enables the HarfBuzz port of RenderText on all platforms.
--enable-impl-side-painting Paint content on the compositor thread instead of the main thread.
--enable-inband-text-tracks Enables support for inband text tracks in media content.
--enable-input-view No description
--enable-instant-search-clicks[8] Enables instant search clicks feature.
--enable-ipv6 Enables IPv6 support, even if probes suggest that it may not be fully supported. Some probes may require internet connections, and this flag will allow support independent of application testing. This flag overrides "disable-ipv6" which appears elswhere in this file.
--enable-kiosk-mode Enable Kiosk mode for ChromeOS. Note this switch refers to retail mode rather than the kiosk app mode.
--enable-layer-squashing Enables experimental feature that maps multiple RenderLayers to one composited layer to avoid pathological layer counts.
--enable-lcd-text Enables LCD text.
--enable-leak-detection Enables the leak detection of loading webpages. This allows us to check whether or not reloading a webpage releases web-related objects correctly.
--enable-linkable-ephemeral-apps Enables experimentation with launching ephemeral apps via hyperlinks.
--enable-local-file-accesses[8] Enable file accesses for debug.
--enable-logging Force logging to be enabled. Logging is disabled by default in release builds.
--enable-low-res-tiling When using CPU rasterizing generate low resolution tiling. Low res tiles may be displayed during fast scrolls especially on slower devices.
--enable-main-frame-before-activation Enables sending the next BeginMainFrame before the previous commit activates.
--enable-manager-for-sync-signin Enable saving and filling for the sync signin form. Currently the default behavior.
--enable-material-design-ntp Enables the Material Design NTP.
--enable-memory-benchmarking Enables the memory benchmarking extension
--enable-message-center-always-scroll-up-upon-notification-removal Enables message center to always move other notifications upwards when a notification is removed, no matter whether the message center is displayed top down or not.
--enable-mime-handler-view Hack so that feature switch can work with about_flags. See kEnableScriptsRequireAction.
--enable-multiprocess Load apps in separate processes. TODO(vtl): Work in progress; doesn't work. Flip this to "disable" (or maybe change it to "single-process") when it works.
--enable-nacl Runs the Native Client inside the renderer process and enables GPU plugin (internally adds lEnableGpuPlugin to the command line).
--enable-nacl-debug Enables debugging via RSP over a socket.
--enable-nacl-nonsfi-mode Enables Non-SFI mode, in which programs can be run without NaCl's SFI sandbox.
--enable-natural-scroll-default Enables natural scroll by default.
--enable-net-benchmarking Enables the network-related benchmarking extensions.
--enable-network-information Enables the network information API.
--enable-network-portal-notification Enables notifications about captive portals in session.
--enable-new-avatar-menu Enable the new avatar menu and the User Manager.
--enable-npn-http Enables NPN with HTTP. It means NPN is enabled but SPDY won't be used. HTTP is still used for all requests.
--enable-offline-auto-reload Enable auto-reload of error pages if offline.
--enable-offline-auto-reload-visible-only Only auto-reload error pages when the tab is visible.
--enable-offline-load-stale-cache Enable/Disable offering a "Load stale copy" option to the user if offline.
--enable-one-copy Enable rasterizer that writes directly to GPU memory.
--enable-origin-chip-always Controls which branch of the origin chip in location bar experiment is enabled. We're using independent flags here (as opposed to a common flag with different values) to be able to enable/disable the entire experience associated with this feature server-side from the FieldTrial (the complete experience includes other flag changes as well). It is not currently possible to do that with "flag=value" flags.
--enable-origin-chip-on-srp No description
--enable-overlay-fullscreen-video Enables use of hardware overlay for fullscreen video playback. Android only.
--enable-overlay-scrollbar Enables overlay scrollbars on Aura or Linux. Does nothing on Mac.
--enable-override-bookmarks-ui Enables extensions to hide bookmarks UI elements.
--enable-overscroll-notifications Forward overscroll event data from the renderer to the browser.
--enable-panels Enables panels (always on-top docked pop-up windows).
--enable-password-generation Enables password generation when we detect that the user is going through account creation.
--enable-pepper-testing Enables the testing interface for PPAPI.
--enable-permissions-bubbles Use bubbles for content permissions requests instead of infobars.
--enable-pinch Enables compositor-accelerated touch-screen pinch gestures.
--enable-pinch-virtual-viewport Virtual viewport for fixed-position elements, scrollbars during pinch.
--enable-pixel-output-in-tests Forces tests to produce pixel output when they normally wouldn't.
--enable-plugin-placeholder-shadow-dom Enables presenting plugin placeholder content as shadow DOM.
--enable-plugin-power-saver[1] Enables the plugin power saver feature.
--enable-precache Enables the proactive populating of the disk cache with Web resources that are likely to be needed in future page fetches.
--enable-precise-memory-info Make the values returned to window.performance.memory more granular and more up to date in shared worker. Without this flag, the memory information is still available, but it is bucketized and updated less frequently. This flag also applys to workers.
--enable-prefer-compositing-to-lcd-text Enable the creation of compositing layers when it would prevent LCD text.
--enable-print-preview-register-promos Enables showing unregistered printers in print preview
--enable-privet-storage Enable Privet storage.
--enable-profile-shortcut-manager[4] Force-enables the profile shortcut manager. This is needed for tests since they use a custom-user-data-dir which disables this.
--enable-profiling Enables tracking of tasks in profiler for viewing via about:profiler. To predominantly disable tracking (profiling), use the command line switch: --enable-profiling=0 Some tracking will still take place at startup, but it will be turned off during chrome_browser_main.
--enable-query-extraction Enables query in the omnibox.
--enable-quic Enables support for the QUIC protocol. This is a temporary testing flag.
--enable-quic-pacing Disable use of pacing of QUIC packets. This only has an effect if QUIC protocol is enabled.
--enable-quic-port-selection Enable use of Chromium's port selection for the ephemeral port via bind(). This only has an effect if QUIC protocol is enabled.
--enable-reader-mode-toolbar-icon Enables context-sensitive reader mode button in the toolbar.
--enable-region-based-columns Enables the CSS multicol implementation that uses the regions implementation.
--enable-remote-assistance Allows remote assistance connection to this computer using the Chrome Remote Desktop app on Chrome OS.
--enable-renderer-mojo-channel Replaces renderer-browser IPC channel with ChnanelMojo.
--enable-request-tablet-site Enables request of tablet site (via user agent override).
--enable-sandbox-logging Cause the OS X sandbox write to syslog every time an access to a resource is denied by the sandbox.
--enable-save-password-bubble Enables save password prompt bubble.
--enable-screenshot-testing-with-mode Enables using screenshots in tests and seets mode.
--enable-scripts-require-action FeatureSwitch and about_flags don't play nice. Feature switch expects either --enable-<feature> or --<feature>=1, but about_flags expects the command line argument to enable it (or a selection). Hack this in, so enabling it in about_flags enables the feature. Appending this flag has the same effect as --scripts-require-action=1.
--enable-scroll-prediction Enable scroll prediction for scroll update events.
--enable-sdch-over-https Enables SDCH for https schemes.
--enable-search-button-in-omnibox-always Controls which branch of the "search button in omnibox" experiment is enabled. We're using independent flags here (as opposed to a common flag with different values) to be able to enable/disable the entire experience associated with this feature server-side from the FieldTrial (the complete experience includes other flag changes as well). It is not currently possible to do that with "flag=value" flags.
--enable-search-button-in-omnibox-for-str No description
--enable-search-button-in-omnibox-for-str-or-iip No description
--enable-seccomp-filter-sandbox Enables seccomp-bpf support for Android. Requires experimental kernel support. <http://crbug.com/166704>
--enable-service-worker-sync Enable support for sync events in ServiceWorkers.
--enable-session-crashed-bubble Enables using bubbles for session restore request instead of infobars.
--enable-settings-window Enable or disable settings in a separate browser window per profile (see SettingsWindowEnabled() below).
--enable-share-group-async-texture-upload Allows async texture uploads (off main thread) via GL context sharing.
--enable-show-modal-dialog Enables the deprecated window.showModalDialog API. This is slated for removal.
--enable-skia-benchmarking Enables the Skia benchmarking extension
--enable-smooth-scrolling On platforms that support it, enables smooth scroll animation.
--enable-spatial-navigation Enable spatial navigation
--enable-spdy-proxy-auth Enable the data reduction proxy.
--enable-spdy-proxy-dev-auth-origin Enables the origin of the data reduction proxy dev.
--enable-spdy4 Enable SPDY/4, aka HTTP/2. This is a temporary testing flag.
--enable-speech-dispatcher[12] Allows sending text-to-speech requests to speech-dispatcher, a common Linux speech service. Because it's buggy, the user must explicitly enable it so that visiting a random webpage can't cause instability.
--enable-speech-recognition[8] Enable the recognition part of the Web Speech API.
--enable-spelling-auto-correct Enables auto correction for misspelled words.
--enable-spelling-feedback-field-trial Enables participation in the field trial for user feedback to spelling service.
--enable-ssl-connect-job-waiting Enables a feature that holds back some SSLConnectJobs in order to minimize the number of full SSL handshakes completed.
--enable-stale-while-revalidate Enables implementation of the Cache-Control: stale-while-revalidate directive which permits servers to allow the use of stale resources while revalidation proceeds in the background.
--enable-stats-collection-bindings Specifies if the |StatsCollectionController| needs to be bound in the renderer. This binding happens on per-frame basis and hence can potentially be a performance bottleneck. One should only enable it when running a test that needs to access the provided statistics.
--enable-stats-table Enables StatsTable, logging statistics to a global named shared memory table.
--enable-streamlined-hosted-apps Enables an experimental hosted app experience.
--enable-strict-site-isolation Experimentally ensures that each renderer process: 1) Only handles rendering for pages from a single site, apart from iframes. (Note that a page can reference content from multiple origins due to images, JavaScript files, etc. Cross-site iframes are also loaded in-process.) 2) Only has authority to see or use cookies for the page's top-level origin. (So if a.com iframes b.com, the b.com network request will be sent without cookies.) This is expected to break compatibility with many pages for now. Unlike the --site-per-process flag, this allows cross-site iframes, but it blocks all cookies on cross-site requests.
--enable-suggestions-service Enables the suggestions service.
--enable-supervised-user-blacklist Enables the supervised user host blacklist.
--enable-swipe-selection No description
--enable-sync-app-list Enables syncing of the app list independent of extensions.
--enable-sync-articles Enables synced articles.
--enable-sync-synced-notifications Enables synced notifications.
--enable-tab-audio-muting Enables user control over muting tab audio from the tab strip.
--enable-tcp-fastopen Enable use of experimental TCP sockets API for sending data in the SYN packet.
--enable-text-blobs Enable experimental text blob rendering.
--enable-text-input-focus-manager Enables an experimental focus manager to track text input clients.
--enable-threaded-compositing Enabled threaded compositing for layout tests.
--enable-thumbnail-retargeting Enables fanciful thumbnail processing. Used with NTP for instant-extended-api, where thumbnails are generally smaller.
--enable-top-controls-position-calculation No description
--enable-touch-drag-drop Enables touch event based drag and drop.
--enable-touch-editing Enables controls that support touch base text editing.
--enable-touch-feedback Enables additional visual feedback to touch input.
--enable-tracing Enable tracing during the execution of browser tests.
--enable-tracing-output The filename to write the output of the test tracing to.
--enable-transition-compositing Enable/Disable the creation of compositing layers for RenderLayers with a transition on a property that supports accelerated animation (that is, opacity, -webkit-transform, and -webkit-filter), even when no animation is running. These options allow for three possible scenarios: 1. Default (enabled only if we dectect a highDPI display) 2. Enabled always. 3. Disabled always.
--enable-translate-new-ux Enables Translate experimental new UX which replaces the infobar.
--enable-transparent-visuals[13] When enabled, tries to get a transparent X11 visual so that we can have per-pixel alpha in windows. TODO(erg): Remove this switch once we've stabilized the code path. http://crbug.com/369209
--enable-user-controlled-alternate-protocol-ports Enables Alternate-Protocol when the port is user controlled (> 1024).
--enable-usermedia-screen-capturing Enable screen capturing support for MediaStream API.
--enable-v8-idle-notification-after-commit Send a notification from RenderWidgetCompositor to V8 to do idle work (e.g. garbage collection) after the commit until the beginning of the next frame. This moves the work off the critical path where compositor is waiting for the main thread. The flag is experimental until the implementation of the V8 idle handler is completed.
--enable-v8-script-streaming Enables streaming scripts to V8 while loading.
--enable-video-player-chromecast-support Enables the chromecast support for video player app.
--enable-viewport Enables the use of the @viewport CSS rule, which allows pages to control aspects of their own layout. This also turns on touch-screen pinch gestures.
--enable-viewport-meta Enables the use of the legacy viewport meta tag. Turning this on also turns on the @viewport CSS rule
--enable-virtual-keyboard No description
--enable-virtual-keyboard-overscroll No description
--enable-vtune-support Enable the Vtune profiler support.
--enable-web-based-signin Enables the pure web-based flow for sign in on first run/NTP/wrench menu/ settings page.
--enable-web-midi Enables Web MIDI API.
--enable-webgl-draft-extensions Enables WebGL extensions not yet approved by the community.
--enable-webgl-image-chromium Enables WebGL rendering into a scanout buffer for overlay support.
--enable-webkit-text-subpixel-positioning Enable text glyphs to have X-positions that aren't snapped to the pixel grid in webkit renderers.
--enable-webrtc-hw-h264-encoding[7] Enables H264 HW encode acceleration for WebRTC.
--enable-webrtc-hw-vp8-encoding[7] Enables VP8 HW encode acceleration for WebRTC.
--enable-website-settings-manager Enables the Website Settings page on the Settings page.
--enable-websocket-over-spdy Uses WebSocket over SPDY.
--enable-zero-copy Enable rasterizer that writes directly to GPU memory associated with tiles.
--enable-zero-suggest-ether-noserp[8] Enables zero suggest functionality on Dev channel, showing contextual suggestions (EtherSuggest) for http pages.
--enable-zero-suggest-ether-serp[8] Enables zero suggest functionality on Dev channel, showing contextual suggestions (EtherSuggest) for http pages and google.com search queries.
--enable-zero-suggest-most-visited[8] Enables zero suggest functionality on Dev channel, showing most visited sites as default suggestions.
--enable-zero-suggest-personalized[8] Enables zero suggest functionality on Dev channel, showing recently typed queries as default suggestions.
--enabled enabled: touch events always enabled.
--encode-binary Encode binary layout test results (images, audio) using base64.
--enforce No description
--enforce-gl-minimums Enforce GL minimums.
--enforce_strict No description
--enhanced-bookmarks-experiment Enable Enhanced Bookmarks.
--enterprise-enable-forced-re-enrollment Whether to enable forced enterprise re-enrollment.
--enterprise-enrollment-initial-modulus Power of the power-of-2 initial modulus that will be used by the auto-enrollment client. E.g. "4" means the modulus will be 2^4 = 16.
--enterprise-enrollment-modulus-limit Power of the power-of-2 maximum modulus that will be used by the auto-enrollment client.
--enterprise-enrollment-skip-robot-auth Don't create robot account on enrollment. Used when testing device enrollment against YAPS or the Python test server.
--error-console Allows the ErrorConsole to collect runtime and manifest errors, and display them in the chrome:extensions page.
--explicitly-allowed-ports Explicitly allows additional ports using a comma-separated list of port numbers.
--expose-internals-for-testing Exposes the window.internals object to JavaScript for interactive development and debugging of layout tests that rely on it.
--expose-ipc-echo Expose window.ipcTester object for testing
--extended-response No description
--extension-action-redesign Whether to switch to extension action redesign mode (experimental).
--extension-content-verification Name of the command line flag to force content verification to be on in one of various modes.
--extension-process Marks a renderer as extension process.
--extensions-install-verification Turns on extension install verification if it would not otherwise have been turned on.
--extensions-multi-account Enables multiple account versions of chrome.identity APIs.
--extensions-not-webstore Specifies a comma-separated list of extension ids that should be forced to be treated as not from the webstore when doing install verification.
--extensions-on-chrome-urls Enables extensions running scripts on chrome:// URLs. Extensions still need to explicitly request access to chrome:// URLs in the manifest.
--extensions-update-frequency Frequency in seconds for Extensions auto-update.
--extra-plugin-dir Load NPAPI plugins from the specified directory.
--extra-search-query-params Additional query params to insert in the search and instant URLs. Useful for testing.
--fake-cloud-policy-type[14] Registers for cloud policy using the BROWSER client type instead of the ANDROID_BROWSER or IOS_BROWSER types. This allows skipping the server whitelist. TODO(joaodasilva): remove this. http://crbug.com/248527
--fake-variations-channel Fakes the channel of the browser for purposes of Variations filtering. This is to be used for testing only. Possible values are "stable", "beta", "dev" and "canary". Note that this only applies if the browser's reported channel is UNKNOWN.
--fast-start If this flag is present then this command line is being delegated to an already running chrome process via the fast path, ie: before chrome.dll is loaded. It is useful to tell the difference for tracking purposes.
--fast-user-switching Allows displaying the list of existing profiles in the avatar bubble for fast switching between profiles.
--feedback-server Alternative feedback server to use when submitting user feedback
--filemgr-ext-path[15] Enables overriding the path of file manager extension.
--first-exec-after-boot Passed to Chrome the first time that it's run after the system boots. Not passed on restart after sign out.
--flag-switches-begin These two flags are added around the switches about:flags adds to the command line. This is useful to see which switches were added by about:flags on about:version. They don't have any effect.
--flag-switches-end No description
--force-app-mode Forces application mode. This hides certain system UI elements and forces the app to be installed if it hasn't been already.
--force-auxiliary-bitmap No description
--force-desktop[4] For the DelegateExecute verb handler to launch Chrome in desktop mode on Windows 8 and higher. Used when relaunching metro Chrome.
--force-dev-mode-highlighting Whether to force developer mode extensions highlighting.
--force-device-scale-factor Overrides the device scale factor for the browser UI and the contents.
--force-directshow[4] Used to troubleshoot problems with different video capture implementations on Windows. By default we use the Media Foundation API on Windows 7 and up, but specifying this switch will force use of DirectShow always. See bug: http://crbug.com/268412
--force-fieldtrials Some field trials may be randomized in the browser, and the randomly selected outcome needs to be propagated to the renderer. For instance, this is used to modify histograms recorded in the renderer, or to get the renderer to also set of its state (initialize, or not initialize components) to match the experiment(s). The option is also useful for forcing field trials when testing changes locally. The argument is a list of name and value pairs, separated by slashes. See FieldTrialList::CreateTrialsFromString() in field_trial.h for details.
--force-first-run Displays the First Run experience when the browser is started, regardless of whether or not it's actually the First Run (this overrides kNoFirstRun).
--force-first-run-ui Forces first-run UI to be shown for every login.
--force-gpu-mem-available-mb Sets the total amount of memory that may be allocated for GPU resources
--force-gpu-rasterization Always use the Skia GPU backend for drawing layer tiles. Only valid with GPU accelerated compositing + impl-side painting. Overrides the kEnableGpuRasterization flag.
--force-immersive[4] For the DelegateExecute verb handler to launch Chrome in metro mode on Windows 8 and higher. Used when relaunching metro Chrome.
--force-login-manager-in-tests Usually in browser tests the usual login manager bringup is skipped so that tests can change how it's brought up. This flag disables that.
--force-mediafoundation[4] Force the use of MediaFoundation for video capture. This is only supported in Windows 7 and above. Used, like |kForceDirectShowVideoCapture|, to troubleshoot problems in Windows platforms.
--force-qtkit[3] QTKit is the media capture API predecessor to AVFoundation, available up and until Mac OS X 10.9 (despite being deprecated in this last one). This flag is used for troubleshooting and testing, and forces QTKit in builds and configurations where AVFoundation would be used otherwise.
--force-renderer-accessibility Force renderer accessibility to be on instead of enabling it on demand when a screen reader is detected. The disable-renderer-accessibility switch overrides this if present.
--force-use-overlay-embedded-video[8] Always use the video overlay for the embedded video. This switch is intended only for tests.
--force-variation-ids Forces additional Chrome Variation Ids that will be sent in X-Client-Data header, specified as a 64-bit encoded list of numeric experiment ids. Ids prefixed with the character "t" will be treated as Trigger Variation Ids.
--force-wave-audio[4] Use Windows WaveOut/In audio API even if Core Audio is supported.
--full-memory-crash-report Generates full memory crash dump.
--gaia-url No description
--golden-screenshots-dir Screenshot testing: specifies the directory where the golden screenshots are stored.
--google-apis-url No description
--google-base-url Specifies an alternate URL to use for speaking to Google. Useful for testing.
--google-profile-info Enables using GAIA information to populate profile name and icon.
--gpu-device-id Passes gpu device_id from browser process to GPU process.
--gpu-driver-bug-workarounds Pass a set of GpuDriverBugWorkaroundType ids, seperated by ','.
--gpu-driver-vendor Passes gpu driver_vendor from browser process to GPU process.
--gpu-driver-version Passes gpu driver_version from browser process to GPU process.
--gpu-launcher Extra command line options for launching the GPU process (normally used for debugging). Use like renderer-cmd-prefix.
--gpu-no-context-lost Inform Chrome that a GPU context will not be lost in power saving mode, screen saving mode, etc. Note that this flag does not ensure that a GPU context will never be lost in any situations, say, a GPU reset.
--gpu-process Makes this process a GPU sub-process.
--gpu-program-cache-size-kb Sets the maximum size of the in-memory gpu program cache, in kb
--gpu-sandbox-allow-sysv-shm Allows shmat() system call in the GPU sandbox.
--gpu-sandbox-failures-fatal Makes GPU sandbox failures fatal.
--gpu-sandbox-start-early Starts the GPU sandbox before creating a GL context.
--gpu-startup-dialog Causes the GPU process to display a dialog on launch.
--gpu-vendor-id Passes gpu vendor_id from browser process to GPU process.
--gssapi-library-name Specifies a custom name for the GSSAPI library to load.
--h No description
--has-chromeos-diamond-key If true, the Chromebook has a keyboard with a diamond key.
--has-chromeos-keyboard If true, the Chromebook has a Chrome OS keyboard. Don't use the flag for Chromeboxes.
--help Print the usage message and exit.
--hide-icons Makes Windows happy by allowing it to show "Enable access to this program" checkbox in Add/Remove Programs->Set Program Access and Defaults. This only shows an error box because the only way to hide Chrome is by uninstalling it.
--homedir Defines user homedir. This defaults to primary user homedir.
--homepage Specifies which page will be displayed in newly-opened tabs. We need this for testing purposes so that the UI tests don't depend on what comes up for http://google.com.
--host-pairing-oobe With this switch, start remora OOBE with the pairing screen.
--host-resolver-parallelism The maximum number of concurrent host resolve requests (i.e. DNS) to allow (not counting backup attempts which would also consume threads). --host-resolver-retry-attempts must be set to zero for this to be exact.
--host-resolver-retry-attempts The maximum number of retry attempts to resolve the host. Set this to zero to disable host resolver retry attempts.
--host-resolver-rules These mappings only apply to the host resolver.
--host-rules Comma-separated list of rules that control how hostnames are mapped. For example: "MAP * 127.0.0.1" --> Forces all hostnames to be mapped to 127.0.0.1 "MAP *.google.com proxy" --> Forces all google.com subdomains to be resolved to "proxy". "MAP test.com [::1]:77 --> Forces "test.com" to resolve to IPv6 loopback. Will also force the port of the resulting socket address to be 77. "MAP * baz, EXCLUDE www.google.com" --> Remaps everything to "baz", except for "www.google.com". These mappings apply to the endpoint host in a net::URLRequest (the TCP connect and host resolver in a direct connection, and the CONNECT in an http proxy connection, and the endpoint host in a SOCKS proxy connection).
--http-port No description
--ignore-certificate-errors Ignores certificate-related errors.
--ignore-gpu-blacklist Ignores GPU blacklist.
--ignore-resolution-limits-for-accelerated-video-decode Bypass autodetection of the upper limit on resolution of streams that can be hardware decoded.
--ignore-urlfetcher-cert-requests Causes net::URLFetchers to ignore requests for SSL client certificates, causing them to attempt an unauthenticated SSL/TLS session. This is intended for use when testing various service URLs (eg: kPromoServerURL, kSbURLPrefix, kSyncServiceURL, etc)
--ignore-user-profile-mapping-for-tests If true, profile selection in UserManager will always return active user's profile. TODO(nkostlyev): http://crbug.com/364604 - Get rid of this switch after we turn on multi-profile feature on ChromeOS.
--in-process-gpu Run the GPU process as a thread in the browser process.
--incognito Causes the browser to launch directly in incognito mode.
--install No description
--install-chrome-app Causes Chrome to initiate an installation flow for the given app.
--install-ephemeral-app-from-webstore Causes Chrome to attempt to get metadata from the webstore for the app/extension ID given, and then prompt the user to download and install it. This is allowed *only* for ephemeral apps. All other ids will be ignored.
--instant-process Marks a renderer as an Instant process.
--invalidation-use-gcm-channel Invalidation service should use GCM network channel even if experiment is not enabled.
--ipc-connection-timeout Overrides the timeout, in seconds, that a child process waits for a connection from the browser before killing itself.
--ipc-fuzzer-testcase Specifies the testcase used by the IPC fuzzer.
--javascript-harmony Enables experimental Harmony (ECMAScript 6) features.
--js-flags Specifies the flags passed to JS engine
--keep-alive-for-test Used for testing - keeps browser alive after last browser window closes.
--kiosk Enable Kiosk mode.
--kiosk-mode-screensaver-path Path for the screensaver used in Kiosk mode
--kiosk-printing Print automatically in kiosk mode. |kKioskMode| must be set as well. See http://crbug.com/31395.
--lang The language file that we want to try to open. Of the form language[-country] where language is the 2 letter code from ISO-639.
--learning Speculative resource prefetching will only learn about resources that need to be prefetched but will not prefetch them.
--load-and-launch-app Loads an app from the specified directory and launches it.
--load-component-extension Comma-separated list of directories with component extensions to load.
--load-extension Loads an extension from the specified directory.
--load-plugin Load an NPAPI plugin from the specified path.
--local-heuristics-only-for-password-generation Removes the requirement that we recieved a ping from the autofill servers and that the user doesn't have the given form blacklisted. Used in testing.
--log-gpu-control-list-decisions Logs GPU control list decisions when enforcing blacklist rules.
--log-level Sets the minimum log level. Valid values are from 0 to 3: INFO = 0, WARNING = 1, LOG_ERROR = 2, LOG_FATAL = 3.
--log-net-log Enables saving net log events to a file and sets the file name to use.
--log-plugin-messages Make plugin processes log their sent and received messages to VLOG(1).
--login-manager Enables Chrome-as-a-login-manager behavior.
--login-profile Specifies the profile to use once a chromeos user is logged in. This parameter is ignored if user goes through login screen since user_id hash defines which profile directory to use. In case of browser restart within active session this parameter is used to pass user_id hash for primary user.
--login-user Specifies the user which is already logged in.
--low-end-device-mode Force low-end device when set to 1; Auto-detect low-end device when set to 2; Force non-low-end device when set to other values or empty;
--lso-url No description
--main-frame-resizes-are-orientation-changes Resizes of the main frame are the caused by changing between landscape and portrait mode (i.e. Android) so the page should be rescaled to fit
--make-default-browser Makes Chrome default browser
--managed-user-id Sets the supervised user ID for any loaded or newly created profile to the given value. Pass an empty string to mark the profile as non-supervised. Used for testing.
--managed-user-sync-token Used to authenticate requests to the Sync service for supervised users. Setting this switch also causes Sync to be set up for a supervised user.
--manual-enhanced-bookmarks Use to opt-in user into Finch experiment groups.
--manual-enhanced-bookmarks-optout No description
--max-tiles-for-interest-area Max tiles allowed for each tilings interest area.
--max-untiled-layer-height Sets the width and height above which a composited layer will get tiled.
--max-untiled-layer-width No description
--max-unused-resource-memory-usage-percentage The amount of unused resource memory compositor is allowed to keep around.
--media-cache-size Forces the maximum disk space to be used by the media cache, in bytes.
--mediadrm-enable-non-compositing[8] Enables use of non-compositing MediaDrm decoding by default for Encrypted Media Extensions implementation.
--memory-metrics Sample memory usage with high frequency and store the results to the Renderer.Memory histogram. Used in memory tests.
--message-loop-histogrammer Enables histograming of tasks served by MessageLoop. See about:histograms/Loop for results, which show frequency of messages on each thread, including APC count, object signalling count, etc.
--metrics-recording-only Enables the recording of metrics reports but disables reporting. In contrast to kDisableMetrics, this executes all the code that a normal client would use for reporting, except the report is dropped rather than sent to the server. This is useful for finding issues in the metrics code during UI and performance tests.
--migrate-data-dir-for-sxs[12] Triggers migration of user data directory to another directory specified as a parameter. The migration is done under singleton lock, and sanity checks are made to avoid corrupting the profile. The browser exits after migration is complete.
--mime-handler-view Whether or not mime handler view guests are enabled.
--mock No description
--mute-audio Mutes audio sent to the audio device so it is not audible during automated testing.
--nacl-broker Value for --type that causes the process to run as a NativeClient broker (used for launching NaCl loader processes on 64-bit Windows).
--nacl-dangerous-no-sandbox-nonsfi Disable sandbox even for non SFI mode. This is particularly unsafe as non SFI NaCl heavily relies on the seccomp sandbox.
--nacl-debug-mask Uses NaCl manifest URL to choose whether NaCl program will be debugged by debug stub. Switch value format: [!]pattern1,pattern2,...,patternN. Each pattern uses the same syntax as patterns in Chrome extension manifest. The only difference is that * scheme matches all schemes instead of matching only http and https. If the value doesn't start with !, a program will be debugged if manifest URL matches any pattern. If the value starts with !, a program will be debugged if manifest URL does not match any pattern.
--nacl-gdb Native Client GDB debugger that will be launched automatically when needed.
--nacl-gdb-script GDB script to pass to the nacl-gdb debugger at startup.
--nacl-loader Value for --type that causes the process to run as a NativeClient loader for SFI mode.
--nacl-loader-nonsfi Value for --type that causes the process to run as a NativeClient loader for non SFI mode.
--net-log-level Sets the base logging level for the net log. Log 0 logs the most data. Intended primarily for use with --log-net-log.
--network-country-iso[8] The telephony region (ISO country code) to use in phone number detection.
--new-profile-management Enables new profile management system, including lock mode.
--new-window Launches URL in new browser window.
--NewProfileManagement No description
--no-announcement No description
--no-default-browser-check Disables the default browser check. Useful for UI/browser tests where we want to avoid having the default browser info-bar displayed.
--no-displaying-insecure-content By default, an https page can load images, fonts or frames from an http page. This switch overrides this to block this lesser mixed-content problem.
--no-events Don't record/playback events when using record & playback.
--no-experiments Disables all experiments set on about:flags. Does not disable about:flags itself. Useful if an experiment makes chrome crash at startup: One can start chrome with --no-experiments, disable the problematic lab at about:flags and then restart chrome without this switch again.
--no-first-run Skip First Run tasks, whether or not it's actually the First Run. Overridden by kForceFirstRun. This does not drop the First Run sentinel and thus doesn't prevent first run from occuring the next time chrome is launched without this flag.
--no-managed-user-acknowledgment-check Disables checking whether we received an acknowledgment when registering a supervised user. Also disables the timeout during registration that waits for the ack. Useful when debugging against a server that does not support notifications.
--no-message-box Disable ui::MessageBox. This is useful when running as part of scripts that do not have a user interface.
--no-network-profile-warning Whether or not the browser should warn if the profile is on a network share. This flag is only relevant for Windows currently.
--no-pings Don't send hyperlink auditing pings
--no-proxy-server Don't use a proxy server, always make direct connections. Overrides any other proxy server flags that are passed.
--no-referrers Don't send HTTP-Referer headers.
--no-sandbox Disables the sandbox for all process types that are normally sandboxed.
--no-service-autorun Disables the service process from adding itself as an autorun process. This does not delete existing autorun registrations, it just prevents the service from registering a new one.
--no-startup-window Does not automatically open a browser window on startup (used when launching Chrome for the purpose of hosting background apps).
--noerrdialogs Suppresses all error dialogs when present.
--num-pac-threads Specifies the maximum number of threads to use for running the Proxy Autoconfig (PAC) script.
--num-raster-threads Number of worker threads used to rasterize content.
--oauth2-client-id No description
--oauth2-client-secret No description
--oobe-guest-session Indicates that a guest session has been started before OOBE completion.
--oobe-skip-postlogin Skips all other OOBE pages after user login.
--oobe-timer-interval Interval at which we check for total time on OOBE.
--open-ash[16] No description
--origin Map mojo: URLs to a shared library of similar name at this origin. See mojo_url_resolver.cc for details.
--origin-to-force-quic-on Force use of QUIC for requests to the specified origin.
--original-process-start-time The time that a new chrome process which is delegating to an already running chrome process started. (See ProcessSingleton for more details.)
--osmesa No description
--out-of-process-pdf Enable the out of process PDF plugin.
--override-metrics-upload-url Override the URL to which metrics logs are sent for debugging.
--override-use-gl-with-osmesa-for-tests Forces the use of OSMesa instead of hardware gpu.
--overscroll-history-navigation Controls the behavior of history navigation in response to horizontal overscroll. Set the value to '0' to disable. Set the value to '1' to enable the behavior where pages slide in and out in response to the horizontal overscroll gesture and a screenshot of the target page is shown. Set the value to '2' to enable the simplified overscroll UI where a navigation arrow slides in from the side of the screen in response to the horizontal overscroll gesture. Defaults to '1'.
--ozone-dump-file Specify location for image dumps.
--ozone-platform Specify ozone platform implementation to use.
--ozone-test-single-overlay-support Enable support for a single overlay plane.
--ozone-use-surfaceless Specify if the accelerated path should use surfaceless rendering. In this mode there is no EGL surface.
--pack-extension Packages an extension to a .crx installable file from a given directory.
--pack-extension-key Optional PEM private key to use in signing packaged .crx.
--parent-profile Specifies the path to the user data folder for the parent profile.
--password-store[17] Specifies which password store to use (detect, default, gnome, kwallet).
--permission-request-api-scope Development flag for permission request API. This flag is needed until the API is finalized. TODO(bauerb): Remove when this flag is not needed anymore.
--permission-request-api-url Development flag for permission request API. This flag is needed until the API is finalized. TODO(bauerb): Remove when this flag is not needed anymore.
--playback-mode Read previously recorded data from the cache. Only cached data is read. See kRecordMode.
--plugin Causes the process to run as a plugin subprocess.
--plugin-launcher Specifies a command that should be used to launch the plugin process. Useful for running the plugin process through purify or quantify. Ex: --plugin-launcher="path\to\purify /Run=yes"
--plugin-path Tells the plugin process the path of the plugin to load
--plugin-startup-dialog Causes the plugin process to display a dialog on launch.
--plugins-metadata-server-url[18] Specifies a custom URL for fetching plug-ins metadata. Used for testing.
--power-stub Specifies power stub behavior: 'cycle=2' - Cycles power states every 2 seconds. See FakeDBusThreadManager::ParsePowerCommandLineSwitch for full details.
--ppapi Argument to the process type that indicates a PPAPI plugin process type.
--ppapi-broker Argument to the process type that indicates a PPAPI broker process type.
--ppapi-flash-args "Command-line" arguments for the PPAPI Flash; used for debugging options.
--ppapi-flash-path Use the PPAPI (Pepper) Flash found at the given path.
--ppapi-flash-version Report the given version for the PPAPI (Pepper) Flash. The version should be numbers separated by '.'s (e.g., "12.3.456.78"). If not specified, it defaults to "10.2.999.999".
--ppapi-in-process Runs PPAPI (Pepper) plugins in-process.
--ppapi-plugin-launcher Like kPluginLauncher for PPAPI plugins.
--ppapi-startup-dialog Causes the PPAPI sub process to display a dialog on launch. Be sure to use --no-sandbox as well or the sandbox won't allow the dialog to display.
--precache-config-settings-url The URL that provides the PrecacheConfigurationSettings proto.
--precache-manifest-url-prefix Precache manifests will be served from URLs with this prefix.
--prefetch-search-results Triggers prerendering of search base page to prefetch results for the typed omnibox query. Only has an effect when prerender is enabled.
--prerender Controls speculative prerendering of pages, and content prefetching. Both are dispatched from <link rel=prefetch href=...> elements.
--prerender-from-omnibox Triggers prerendering of pages from suggestions in the omnibox. Only has an effect when Instant is either disabled or restricted to search, and when prerender is enabled.
--privet-ipv6-only Use IPv6 only for privet HTTP.
--process-per-site Runs a single process for each site (i.e., group of pages from the same registered domain) the user visits. We default to using a renderer process for each site instance (i.e., group of pages from the same registered domain with script connections to each other).
--process-per-tab Runs each set of script-connected tabs (i.e., a BrowsingInstance) in its own renderer process. We default to using a renderer process for each site instance (i.e., group of pages from the same registered domain with script connections to each other).
--product-version Outputs the product version information and quit. Used as an internal api to detect the installed version of Chrome on Linux.
--profile-directory Selects directory of profile to associate with the first browser launched.
--profiler-timing Configure whether chrome://profiler will contain timing information. This option is enabled by default. A value of "0" will disable profiler timing, while all other values will enable it.
--profiling-at-start Starts the sampling based profiler for the browser process at startup. This will only work if chrome has been built with the gyp variable profiling=1. The output will go to the value of kProfilingFile.
--profiling-file Specifies a location for profiling output. This will only work if chrome has been built with the gyp variable profiling=1. {pid} if present will be replaced by the pid of the process. {count} if present will be incremented each time a profile is generated for this process. The default is chrome-profile-{pid}.
--profiling-flush Controls whether profile data is periodically flushed to a file. Normally the data gets written on exit but cases exist where chrome doesn't exit cleanly (especially when using single-process). A time in seconds can be specified.
--profiling-output-file Specifies a path for the output of task-level profiling which can be loaded and viewed in about:profiler.
--promo-server-url Specifies a custom URL for fetching NTP promo data.
--proxy-auto-detect Forces proxy auto-detection.
--proxy-bypass-list Specifies a list of hosts for whom we bypass proxy settings and use direct connections. Ignored if --proxy-auto-detect or --no-proxy-server are also specified. This is a comma-separated list of bypass rules. See: "net/proxy/proxy_bypass_rules.h" for the format of these rules.
--proxy-pac-url Uses the pac script at the given URL
--proxy-server Uses a specified proxy server, overrides system settings. This switch only affects HTTP and HTTPS requests.
--quic-connection-options Specifies a comma separated list of QUIC connection options to send to the server.
--quic-max-packet-length Specifies the maximum length for a QUIC packet.
--quic-version Specifies the version of QUIC to use.
--record-mode Chrome supports a playback and record mode. Record mode saves *everything* to the cache. Playback mode reads data exclusively from the cache. This allows us to record a session into the cache and then replay it at will. See also kPlaybackMode.
--reduce-security-for-testing Enables more web features over insecure connections. Designed to be used for testing purposes only.
--register-font-files Registers additional font files on Windows (for fonts outside the usual %WINDIR%\Fonts location). Multiple files can be used by separating them with a semicolon (;).
--register-pepper-plugins Register Pepper plugins (see pepper_plugin_list.cc for its format).
--relaunch-shortcut[4] Relaunches metro Chrome on Windows 8 and higher using a given shortcut.
--relauncher[3] A process type (switches::kProcessType) that relaunches the browser. See chrome/browser/mac/relauncher.h.
--remember-cert-error-decisions Remember user proceeds through SSL interstitials for a specified amount of time. In particular, remember these decisions through session restart. The time delta to remember certificates should be specified in seconds.
--remote-debugging-port Enables remote debug over HTTP on the specified port.
--remote-debugging-socket-name[8] Enables remote debug over HTTP on the specified socket name.
--renderer Causes the process to run as renderer instead of as browser.
--renderer-assert-test Causes the renderer process to throw an assertion on launch.
--renderer-cmd-prefix On POSIX only: the contents of this flag are prepended to the renderer command line. Useful values might be "valgrind" or "xterm -e gdb --args".
--renderer-process-limit Overrides the default/calculated limit to the number of renderer processes. Very high values for this setting can lead to high memory/resource usage or instability.
--renderer-startup-dialog Causes the renderer process to display a dialog on launch.
--renderer-wait-for-java-debugger[8] Block ChildProcessMain thread of the renderer's ChildProcessService until a Java debugger is attached.
--requirements No description
--reset-app-list-install-state If set, the app list will forget it has been installed on startup. Note this doesn't prevent the app list from running, it just makes Chrome think the app list hasn't been enabled (as in kEnableAppList) yet.
--reset-variation-state Forces a reset of the one-time-randomized FieldTrials on this client, also known as the Chrome Variations state.
--restore-last-session Indicates the last session should be restored on startup. This overrides the preferences value and is primarily intended for testing. The value of this switch is the number of tabs to wait until loaded before 'load completed' is sent to the ui_test.
--safebrowsing-disable-auto-update If present, safebrowsing only performs update when SafeBrowsingProtocolManager::ForceScheduleNextUpdate() is explicitly called. This is used for testing only.
--safebrowsing-disable-download-protection TODO(lzheng): Remove this flag once the feature works fine (http://crbug.com/74848). Disables safebrowsing feature that checks download url and downloads content's hash to make sure the content are not malicious.
--safebrowsing-disable-extension-blacklist Disables safebrowsing feature that checks for blacklisted extensions.
--safebrowsing-disable-side-effect-free-whitelist Disables safebrowsing feature that provides a side-effect free whitelist.
--sandbox-ipc Causes the process to run as a sandbox IPC subprocess.
--save-page-as-mhtml Disable saving pages as HTML-only, disable saving pages as HTML Complete (with a directory of sub-resources). Enable only saving pages as MHTML. See http://crbug.com/120416 for how to remove this switch.
--scripts-require-action Notify the user and require consent for extensions running scripts. Appending --scripts-require-action=1 has the same effect as --enable-scripts-require-action (see below).
--scroll-end-effect Enables or disables scroll end effect in response to vertical overscroll. Set the value to '1' to enable the feature, and set to '0' to disable. Defaults to disabled.
--service No description
--service-name No description
--set-token Sets a token in the token service, for testing.
--shill-stub Overrides network stub behavior. By default, ethernet, wifi and vpn are enabled, and transitions occur instantaneously. Multiple options can be comma separated (no spaces). Note: all options are in the format 'foo=x'. See FakeShillManagerClient::SetInitialNetworkState for implementation. Examples: 'clear=1' - Clears all default configurations 'wifi=on' - A wifi network is initially connected ('1' also works) 'wifi=off' - Wifi networks are all initially disconnected ('0' also works) 'wifi=disabled' - Wifi is initially disabled 'wifi=none' - Wifi is unavailable 'wifi=portal' - Wifi connection will be in Portal state 'cellular=1' - Cellular is initially connected 'interactive=3' - Interactive mode, connect/scan/etc requests take 3 secs
--show-app-list If true the app list will be shown.
--show-autofill-type-predictions Annotates forms with Autofill field type predictions.
--show-component-extension-options Makes component extensions appear in chrome://settings/extensions.
--show-composited-layer-borders Renders a border around compositor layers to help debug and study layer compositing.
--show-fps-counter Draws a FPS indicator
--show-icons See kHideIcons.
--show-layer-animation-bounds Renders a border that represents the bounding box for the layer's animation.
--show-nonoccluding-rects Show rects in the HUD wherever something is not known to be drawn opaque and is not considered to be occluding the pixels behind it.
--show-occluding-rects Show rects in the HUD wherever something is known to be drawn opaque and is considered occluding the pixels behind it.
--show-paint-rects Visibly render a border around paint rects in the web page to help debug and study painting behavior.
--show-property-changed-rects Show rects in the HUD around layers whose properties have changed.
--show-replica-screenspace-rects Show rects in the HUD around the screen-space transformed bounds of every layer's replica, when they have one.
--show-screenspace-rects Show rects in the HUD around the screen-space transformed bounds of every layer.
--show-surface-damage-rects Show rects in the HUD around damage as it is recorded into each render surface.
--signin-process Marks a renderer as the signin process.
--silent-debugger-extension-api Does not show an infobar when an extension attaches to a page using chrome.debugger page. Required to attach to extension background pages.
--silent-launch Causes Chrome to launch without opening any windows by default. Useful if one wishes to use Chrome as an ash server.
--simulate-critical-update Simulates a critical update being available.
--simulate-outdated Simulates that current version is outdated.
--simulate-outdated-no-au Simulates that current version is outdated and auto-update is off.
--simulate-printing-errors No description
--simulate-upgrade Simulates an update being available.
--single-process Runs the renderer and plugins in the same process as the browser
--site-per-process Experimentally enforces a one-site-per-process security policy. All cross-site navigations force process swaps, and we can restrict a renderer process's access rights based on its site. For details, see: http://www.chromium.org/developers/design-documents/site-isolation Unlike --enable-strict-site-isolation (which allows cross-site iframes), this flag does not affect which cookies are attached to cross-site requests. Support is being added to render cross-site iframes in a different process than their parent pages.
--skip-gpu-data-loading Skip gpu info collection, blacklist loading, and blacklist auto-update scheduling at browser startup time. Therefore, all GPU features are available, and about:gpu page shows empty content. The switch is intended only for layout tests. TODO(gab): Get rid of this switch entirely.
--slow-down-raster-scale-factor Re-rasters everything multiple times to simulate a much slower machine. Give a scale factor to cause raster to take that many times longer to complete, such as --slow-down-raster-scale-factor=25.
--sms-test-messages Sends test messages on first call to RequestUpdate (stub only).
--spdy-proxy-auth-fallback The origin of the data reduction proxy fallback.
--spdy-proxy-auth-origin The origin of the data reduction proxy.
--spdy-proxy-auth-value A test key for data reduction proxy authentication.
--spdy-proxy-dev-auth-origin The origin of the data reduction proxy dev.
--speculative-resource-prefetching Speculative resource prefetching.
--spelling-service-feedback-interval-seconds Specifies the number of seconds between sending batches of feedback to spelling service. The default is 30 minutes. The minimum is 5 seconds. This switch is for temporary testing only. TODO(rouslan): Remove this flag when feedback testing is complete. Revisit by August 2013.
--spelling-service-feedback-url Specifies the URL where spelling service feedback data will be sent instead of the default URL. This switch is for temporary testing only. TODO(rouslan): Remove this flag when feedback testing is complete. Revisit by August 2013.
--spy Enables the mojo spy, which acts as a man-in-the-middle inspector for message pipes and other activities. This is work in progress.
--ssl-version-fallback-min Specifies the minimum SSL/TLS version ("ssl3", "tls1", "tls1.1", or "tls1.2") that TLS fallback will accept.
--ssl-version-max Specifies the maximum SSL/TLS version ("ssl3", "tls1", "tls1.1", or "tls1.2").
--ssl-version-min Specifies the minimum SSL/TLS version ("ssl3", "tls1", "tls1.1", or "tls1.2").
--stable-release-mode This makes us disable some web-platform runtime features so that we test content_shell as if it was a stable release. It is only followed when kDumpRenderTree is set. For the features' level, see http://dev.chromium.org/blink/runtime-enabled-features.
--start No description
--start-fullscreen Specifies if the browser should start in fullscreen mode, like if the user had pressed F11 right after startup.
--start-maximized Starts the browser maximized, regardless of any previous settings.
--state-path No description
--stop No description
--strict-layer-property-change-checking Check that property changes during paint do not occur.
--stub-cros-settings Indicates that a stub implementation of CrosSettings that stores settings in memory without signing should be used, treating current user as the owner. This option is for testing the chromeos build of chrome on the desktop only.
--supports-dual-gpus Indicates whether the dual GPU switching is supported or not.
--swiftshader No description
--swiftshader-path No description
--sync-allow-insecure-xmpp-connection Allows insecure XMPP connections for sync (for testing).
--sync-deferred-startup-timeout-seconds Allows overriding the deferred init fallback timeout.
--sync-disable-deferred-startup Enables deferring sync backend initialization until user initiated changes occur.
--sync-enable-get-update-avoidance Enables feature to avoid unnecessary GetUpdate requests.
--sync-notification-host-port Overrides the default host:port used for notifications.
--sync-short-initial-retry-override This flag causes sync to retry very quickly (see polling_constants.h) the when it encounters an error, as the first step towards exponential backoff.
--sync-touchmove No description
--sync-url Overrides the default server used for profile sync.
--tab-capture-downscale-quality Upscale defaults to "good".
--tab-capture-upscale-quality Scaling quality for capturing tab. Should be one of "fast", "good" or "best". One flag for upscaling, one for downscaling. Upscale defaults to "best".
--test-auto-update-ui Enables testing for auto update UI.
--test-child-process When running certain tests that spawn child processes, this switch indicates to the test framework that the current process is a child process.
--test-gl-lib Flag used for Linux tests: for desktop GL bindings, try to load this GL library first, but fall back to regular library if loading fails.
--test-name Passes the name of the current running automated test to Chrome.
--test-type Type of the current test harness ("browser" or "ui").
--testing-fixed-http-port Allows for forcing socket connections to http/https to use fixed ports.
--testing-fixed-https-port No description
--top-controls-height The height of the movable top controls.
--top-controls-hide-threshold Percentage of the top controls need to be hidden before they will auto hide.
--top-controls-show-threshold Percentage of the top controls need to be shown before they will auto show.
--touch-calibration[19] The calibration factors given as "<left>,<right>,<top>,<bottom>".
--touch-devices[20] Tells chrome to interpret events from these devices as touch events. Only available with XInput 2 (i.e. X server 1.8 or above). The id's of the devices can be retrieved from 'xinput list'.
--touch-events Enable support for touch events.
--touch-scrolling-mode No description
--touchcancel No description
--trace-shutdown Causes TRACE_EVENT flags to be recorded beginning with shutdown. Optionally, can specify the specific trace categories to include (e.g. --trace-shutdown=base,net) otherwise, all events are recorded. --trace-shutdown-file can be used to control where the trace log gets stored to since there is otherwise no way to access the result.
--trace-shutdown-file If supplied, sets the file which shutdown tracing will be stored into, if omitted the default will be used "chrometrace.log" in the current directory. Has no effect unless --trace-shutdown is also supplied. Example: --trace-shutdown --trace-shutdown-file=/tmp/trace_event.log
--trace-startup Causes TRACE_EVENT flags to be recorded from startup. Optionally, can specify the specific trace categories to include (e.g. --trace-startup=base,net) otherwise, all events are recorded. Setting this flag results in the first call to BeginTracing() to receive all trace events since startup. In Chrome, you may find --trace-startup-file and --trace-startup-duration to control the auto-saving of the trace (not supported in the base-only TraceLog component).
--trace-startup-duration Sets the time in seconds until startup tracing ends. If omitted a default of 5 seconds is used. Has no effect without --trace-startup, or if --startup-trace-file=none was supplied.
--trace-startup-file If supplied, sets the file which startup tracing will be stored into, if omitted the default will be used "chrometrace.log" in the current directory. Has no effect unless --trace-startup is also supplied. Example: --trace-startup --trace-startup-file=/tmp/trace_event.log As a special case, can be set to 'none' - this disables automatically saving the result to a file and the first manually recorded trace will then receive all events since startup.
--trace-to-console Sends a pretty-printed version of tracing info to the console.
--trace-to-file Sends trace events from these categories to a file. --trace-to-file on its own sends to default categories.
--trace-to-file-name Specifies the file name for --trace-to-file. If unspecified, it will go to a default file name.
--trace-upload-url Sets the target URL for uploading tracing data.
--translate-script-url Overrides the default server used for Google Translate.
--translate-security-origin Overrides security-origin with which Translate runs in an isolated world.
--trusted-spdy-proxy Disables same-origin check on HTTP resources pushed via a SPDY proxy. The value is the host:port of the trusted proxy.
--try-chrome-again Experimental. Shows a dialog asking the user to try chrome. This flag is to be used only by the upgrade process.
--try-supported-channel-layouts[4] Instead of always using the hardware channel layout, check if a driver supports the source channel layout. Avoids outputting empty channels and permits drivers to enable stereo to multichannel expansion. Kept behind a flag since some drivers lie about supported layouts and hang when used. See http://crbug.com/259165 for more details.
--ttl No description
--type The value of this switch determines whether the process is started as a renderer or plugin host. If it's empty, it's the browser.
--ui-disable-partial-swap Disable partial swap which is needed for some OpenGL drivers / emulators.
--ui-disable-threaded-compositing No description
--ui-enable-impl-side-painting No description
--ui-enable-zero-copy No description
--ui-show-fps-counter No description
--ui-show-layer-animation-bounds No description
--ui-show-layer-borders No description
--ui-show-nonoccluding-rects No description
--ui-show-occluding-rects No description
--ui-show-paint-rects No description
--ui-show-property-changed-rects No description
--ui-show-replica-screenspace-rects No description
--ui-show-screenspace-rects No description
--ui-show-surface-damage-rects No description
--unicast-respond No description
--uninstall No description
--unlimited-storage Overrides per-origin quota settings to unlimited storage for any apps/origins. This should be used only for testing purpose.
--url-mappings Specifies a set of mappings to apply when resolving urls. The value is set of ',' separated mappings, where each mapping consists of a pair of urls giving the to/from url to map. For example, 'a=b,c=d' contains two mappings, the first maps 'a' to 'b' and the second 'c' to 'd'.
--use-cras[21] Use CRAS, the ChromeOS audio server.
--use-discardable-memory Overrides the preferred discardable memory implementation.
--use-fake-device-for-media-stream Use fake device for Media Stream to replace actual camera and microphone.
--use-fake-ui-for-media-stream Bypass the media stream infobar by selecting the default device for media streams (e.g. WebRTC). Works with --use-fake-device-for-media-stream.
--use-file-for-fake-video-capture Use a raw video file as fake video capture device.
--use-gl Select which implementation of GL the GPU process should use. Options are: desktop: whatever desktop OpenGL the user has installed (Linux and Mac default). egl: whatever EGL / GLES2 the user has installed (Windows default - actually ANGLE). osmesa: The OSMesa software renderer.
--use-gpu-in-tests Use hardware gpu, if available, for tests.
--use-mobile-user-agent Set when Chromium should use a mobile user agent.
--use-mock-keychain[3] No description
--use-simple-cache-backend Uses experimental simple cache backend if possible.
--use-spdy Uses Spdy for the transport protocol instead of HTTP. This is a temporary testing flag.
--use-surfaces Use the new surfaces system to handle compositor delegation.
--use-warp On Windows only: use the WARP software rasterizer in the GPU process.
--user-agent A string used to override the default user agent with a custom one.
--user-data-dir Specifies the user data directory, which is where the browser will look for all of its state.
--utility Causes the process to run as a utility subprocess.
--utility-allowed-dir The utility process is sandboxed, with access to one directory. This flag specifies the directory that can be accessed.
--utility-cmd-prefix On POSIX only: the contents of this flag are prepended to the utility process command line. Useful values might be "valgrind" or "xterm -e gdb --args".
--utility-enable-mdns Allows MDns to access network in sandboxed process.
--utility-run-elevated No description
--v Gives the default maximal active V-logging level; 0 is the default. Normally positive values are used for V-logging levels.
--v8-cache-options Set options to cache V8 data. (off, preparse data, or code)
--validate-crx Examines a .crx for validity and prints the result.
--validate-input-event-stream In debug builds, asserts that the stream of input events is valid.
--variations-server-url Specifies a custom URL for the server which reports variation data to the client. Specifying this switch enables the Variations service on unofficial builds. See variations_service.cc.
--version Prints version information and quits.
--video-threads Set number of threads to use for video decoding.
--viewer-launch-via-appid[4] Requests that Chrome launch the Metro viewer process via the given appid (which is assumed to be registered as default browser) and synchronously connect to it.
--vmodule Gives the per-module maximal V-logging levels to override the value given by --v. E.g. "my_module=2,foo*=3" would change the logging level for all code in source files "my_module.*" and "foo*.*" ("-inl" suffixes are also disregarded for this matching). Any pattern containing a forward or backward slash will be tested against the whole pathname and not just the module. E.g., "*/foo/bar/*=2" would change the logging level for all code in source files under a "foo/bar" directory.
--wait-for-debugger Will wait for 60 seconds for a debugger to come to attach to the process.
--wait-for-debugger-children Will add kWaitForDebugger to every child processes. If a value is passed, it will be used as a filter to determine if the child process should have the kWaitForDebugger flag passed on or not.
--wait-for-mutex[4] Waits for the given handle to be signaled before relaunching metro Chrome on Windows 8 and higher.
--wake-on-packets Enables waking the device based on the receipt of some network packets.
--wallet-secure-service-url Secure service URL for Online Wallet service. Used as the base url to escrow credit card numbers.
--wallet-service-url Service URL for Online Wallet service. Used as the base url for Online Wallet API calls.
--wallet-service-use-sandbox Use the sandbox Online Wallet service URL (for developer testing).
--waveout-buffers[4] Number of buffers to use for WaveOut.
--whitelisted-extension-id Adds the given extension ID to all the permission whitelists.
--window-position Specify the initial window position: --window-position=x,y
--window-size Specify the initial window size: --window-size=w,h
--winhttp-proxy-resolver Uses WinHTTP to fetch and evaluate PAC scripts. Otherwise the default is to use Chromium's network stack to fetch, and V8 to evaluate.
--wm-window-animations-disabled If present animations are disabled.
--zygote Causes the process to run as a renderer zygote.

How to use a command line switch?

The Chromium Team has made a page on which they briefly explain how to use these switches.

Conditions

These are rather technical. While most are pretty self-explanatory, keep in mind that any condition means that a switch isn't always available.

  1. The constant ENABLE_PLUGINS must be defined.
  2. The constants OS_FREEBSD, OS_LINUX and OS_SOLARIS must be defined.
  3. The constant OS_MACOSX must be defined.
  4. The constant OS_WIN must be defined.
  5. The constant OS_CHROMEOS must be defined.
  6. The constant OFFICIAL_BUILD must not be defined, and the constant ENABLE_FULL_PRINTING must be defined.
  7. The constant ENABLE_WEBRTC must be defined.
  8. The constant OS_ANDROID must be defined.
  9. The constant OS_IOS must not be defined, and the constant OS_MACOSX must be defined.
  10. The constant OS_CHROMEOS must not be defined.
  11. The constant OS_POSIX must be defined.
  12. The constant OS_CHROMEOS must not be defined, and the constant OS_LINUX must be defined.
  13. The constant OS_CHROMEOS must not be defined, and the constant USE_X11 must be defined.
  14. The constants OS_ANDROID and OS_IOS must be defined.
  15. The constant NDEBUG must not be defined.
  16. The constant USE_ASH must be defined.
  17. The constants OS_CHROMEOS and OS_MACOSX must not be defined, and the constant OS_POSIX must be defined.
  18. The constant ENABLE_PLUGIN_INSTALLATION must be defined.
  19. The constants USE_OZONE and USE_XI2_MT must be defined.
  20. The constant OS_LINUX must be defined.
  21. The constant USE_CRAS must be defined.