Chrome Flags

Careful, these experiments may bite
WARNING These experimental features may change, break, or disappear at any time. We make absolutely no guarantees about what may happen if you turn one of these experiments on, and your browser may even spontaneously combust. Jokes aside, your browser may delete all your data, or your security and privacy could be compromised in unexpected ways. Any experiments you enable will be enabled for all users of this browser. Please proceed with caution. Interested in cool new Chrome features? Try our beta channel at chrome.com/beta.
Experiments Reset all to default
Override software rendering list Mac, Windows, Linux, Chrome OS, Android
Overrides the built-in software rendering list and enables GPU-acceleration on unsupported system configurations. #ignore-gpu-blacklist
Disable
Experimental canvas features Mac, Windows, Linux, Chrome OS, Android
Enables the use of experimental canvas features which are still in development. #enable-experimental-canvas-features
Disable
Accelerated 2D canvas Mac, Windows, Linux, Chrome OS, Android
Enables the use of the GPU to perform 2d canvas rendering instead of using software rendering. #disable-accelerated-2d-canvas
Disable
Display list 2D canvas Mac, Windows, Linux, Chrome OS, Android
Enables the use of display lists to record 2D canvas commands. This allows 2D canvas rasterization to be performed on separate thread. #enable-display-list-2d-canvas

Enable 2D canvas dynamic rendering mode switching. Mac, Windows, Linux, Chrome OS, Android
There are multiple implementations of the graphics rendering pipeline for the 2D canvas. These different implementations have different performance characteristics. Turning on this flag allows canvas 2D contexts to switch between these implementations on the fly based on how the canvas is used in order to increase performance. For example, going from an implementation that uses the GPU to one that doesn't. #enable-canvas-2d-dynamic-rendering-mode-switching
Disable
Composited render layer borders Mac, Windows, Linux, Chrome OS, Android
Renders a border around composited Render Layers to help debug and study layer compositing. #composited-layer-borders
Enable
GL composited texture quad borders Mac, Windows, Linux, Chrome OS, Android
Renders a border around GL composited texture quads to help debug and study overlay support. #gl-composited-texture-quad-borders
Disable
Show overdraw feedback Mac, Windows, Linux, Chrome OS, Android
Visualize overdraw by color-coding elements based on if they have other elements drawn underneath. #show-overdraw-feedback
Enable
Partial swap Mac, Windows, Linux, Chrome OS, Android
Sets partial swap behavior. #ui-disable-partial-swap
Disable
WebRTC Stun origin header Mac, Windows, Linux, Chrome OS, Android
When enabled, Stun messages generated by WebRTC will contain the Origin header. #enable-webrtc-stun-origin
Disable
WebRTC Echo Canceller 3. Mac, Windows, Linux, Chrome OS, Android
Experimental WebRTC echo canceller (AEC3). #WebRtcUseEchoCanceller3

Native Client Mac, Windows, Linux, Chrome OS, Android
Support Native Client for all web applications, even those that were not installed from the Chrome Web Store. #enable-nacl
Disable
Native Client GDB-based debugging Mac, Windows, Linux, Chrome OS
Enable GDB debug stub. This will stop a Native Client application on startup and wait for nacl-gdb (from the NaCl SDK) to attach to it. #enable-nacl-debug
Disable
Force PNaCl Subzero Mac, Windows, Linux, Chrome OS
Force the use of PNaCl's fast Subzero translator for all pexe files. #force-pnacl-subzero
Disable
Restrict Native Client GDB-based debugging by pattern Mac, Windows, Linux, Chrome OS
Restricts Native Client application GDB-based debugging by URL of manifest file. Native Client GDB-based debugging must be enabled for this option to work. #nacl-debug-mask

Experimental Extension APIs Mac, Windows, Linux, Chrome OS
Enables experimental extension APIs. Note that the extension gallery doesn't allow you to upload extensions that use experimental APIs. #extension-apis
Disable
Extensions on chrome:// URLs Mac, Windows, Linux, Chrome OS, Android
Enables running extensions on chrome:// URLs, where extensions explicitly request this permission. #extensions-on-chrome-urls
Enable
Fast tab/window close Mac, Windows, Linux, Chrome OS, Android
Enables fast tab/window closing - runs a tab's onunload js handler independently of the GUI. #enable-fast-unload
Disable
New history entries require a user gesture. Mac, Windows, Linux, Chrome OS, Android
Require a user gesture to add a history entry. #enable-history-entry-requires-user-gesture
Disable
Hyperlink auditing Mac, Windows, Linux, Chrome OS, Android
Sends hyperlink auditing pings. #disable-hyperlink-auditing
Disable
Show Autofill predictions Mac, Windows, Linux, Chrome OS, Android
Annotates web forms with Autofill field type predictions as placeholder text. #show-autofill-type-predictions
Disable
Smooth Scrolling Windows, Linux, Chrome OS, Android
Animate smoothly when scrolling page content. #smooth-scrolling

Overlay Scrollbars Windows, Linux, Chrome OS
Enable the experimental overlay scrollbars implementation. You must also enable threaded compositing to have the scrollbars animate. #overlay-scrollbars

Save Page as MHTML Mac, Windows, Linux
Enables saving pages as MHTML: a single text file containing HTML and all sub-resources. #save-page-as-mhtml
Disable
MHTML Generation Option Mac, Windows, Linux
Provides experimental options for MHTML file generator. #mhtml-generator-option

Experimental QUIC protocol Mac, Windows, Linux, Chrome OS, Android
Enable experimental QUIC protocol support. #enable-quic

Latest stable JavaScript features Mac, Windows, Linux, Chrome OS, Android
Some web pages use legacy or non-standard JavaScript extensions that may conflict with the latest JavaScript features. This flag allows disabling support of those features for compatibility with such pages. #disable-javascript-harmony-shipping
Disable
Experimental JavaScript Mac, Windows, Linux, Chrome OS, Android
Enable web pages to use experimental JavaScript features. #enable-javascript-harmony
Disable
Experimental Validate Asm.js and convert to WebAssembly when valid. Mac, Windows, Linux, Chrome OS, Android
Validate Asm.js when "use asm" is present and then convert to WebAssembly. #enable-asm-webassembly

WebAssembly structured cloning support. Mac, Windows, Linux, Chrome OS, Android
Enable web pages to use WebAssembly structured cloning. #enable-webassembly

Experimental enabled SharedArrayBuffer support in JavaScript. Mac, Windows, Linux, Chrome OS, Android
Enable SharedArrayBuffer support in JavaScript. #shared-array-buffer

Experimental JavaScript Compilation Pipeline Mac, Windows, Linux, Chrome OS, Android
Enable V8 to use the experimental Ignition interpreter and TurboFan compiler for JavaScript execution. #enable-v8-future

3D software rasterizer Mac, Windows, Linux, Chrome OS, Android
Fall back to a 3D software rasterizer when the GPU cannot be used. #disable-software-rasterizer
Disable
GPU rasterization Mac, Windows, Linux, Chrome OS, Android
Use GPU to rasterize web content. Requires impl-side painting. #enable-gpu-rasterization

GPU rasterization MSAA sample count. Mac, Windows, Linux, Chrome OS, Android
Specify the number of MSAA samples for GPU rasterization. #gpu-rasterization-msaa-sample-count

Slimming paint invalidation. Mac, Windows, Linux, Chrome OS, Android
Whether to enable a new paint invalidation system. #slimming-paint-invalidation

Experimental Web Platform features Mac, Windows, Linux, Chrome OS, Android
Enables experimental Web Platform features that are in development. #enable-experimental-web-platform-features
Disable
Developer Tools experiments Mac, Windows, Linux, Chrome OS
Enables Developer Tools experiments. Use Settings panel in Developer Tools to toggle individual experiments. #enable-devtools-experiments
Disable
Silent Debugging Mac, Windows, Linux, Chrome OS
Do not show the infobar when an extension attaches to a page via chrome.debugger API. This is required to debug extension background pages. #silent-debugger-extension-api
Enable
Scroll prediction Mac, Windows, Linux, Chrome OS
Predicts the finger's future position during scrolls allowing time to render the frame before the finger is there. #enable-scroll-prediction
Disable
UI Layout for the browser's top chrome Mac, Windows, Linux, Chrome OS
Toggles between normal and touch (formerly "hybrid") layouts. #top-chrome-md

Site settings with All sites and Site details Mac, Windows, Linux, Chrome OS
Adds new ways of viewing Site settings. #enable-site-settings
Disable
Material Design in the rest of the browser's native UI Mac, Windows, Linux, Chrome OS
Extends the --top-chrome-md setting to secondary UI (bubbles, dialogs, etc.). On Mac, this enables MacViews, which uses toolkit-views for native browser dialogs. #secondary-ui-md
Disable
Touch Events API Mac, Windows, Linux, Chrome OS
Force Touch Events API feature detection to always be enabled or disabled, or to be enabled when a touchscreen is detected on startup (Automatic, the default). #touch-events

Touch adjustment Windows, Linux, Chrome OS, Android
Refine the position of a touch gesture in order to compensate for touches having poor resolution compared to a mouse. #disable-touch-adjustment
Disable
Prefer HTML over Flash Mac, Windows, Linux, Chrome OS
Prefer HTML content by hiding Flash from the list of plugins. #prefer-html-over-flash

NaCl Socket API. Mac, Windows, Linux, Chrome OS
Allows applications to use NaCl Socket API. Use only to test NaCl plugins. #allow-nacl-socket-api
Enable
Run all Flash content when Flash setting is set to "allow" Mac, Windows, Linux, Chrome OS
For sites that have been set to "allow" Flash content, run all content including any that has been deemed unimportant. #run-all-flash-in-allow-mode

Hardware-accelerated video decode Mac, Windows, Chrome OS, Android
Hardware-accelerated video decode where available. #disable-accelerated-video-decode
Disable
Debugging for packed apps Mac, Windows, Linux, Chrome OS
Enables debugging context menu options such as Inspect Element for packed applications. #debug-packed-apps
Enable
Password generation Mac, Windows, Linux, Chrome OS, Android
Allow the user to have Chrome generate passwords when it detects account creation pages. #enable-password-generation

Force-saving of passwords Mac, Windows, Linux, Chrome OS, Android
Allow the user to manually enforce password saving instead of relying on password manager's heuristics. #enable-password-force-saving

Manual password generation. Mac, Windows, Linux, Chrome OS, Android
Allow the user to manually enforce to generate password on a password field. #enable-manual-password-generation

Show autofill signatures. Mac, Windows, Linux, Chrome OS, Android
Annotates web forms with Autofill signatures as HTML attributes. #enable-show-autofill-signatures
Enable
Affiliation based matching in password manager Mac, Windows, Linux, Chrome OS, Android
Allow credentials stored for Android applications to be filled into corresponding websites. #affiliation-based-matching

Use Google Payments sandbox servers Mac, Windows, Linux, Chrome OS, Android
For developers: use the sandbox service for Google Payments API calls. #wallet-service-use-sandbox

Overscroll history navigation Mac, Windows, Linux, Chrome OS, Android
Experimental history navigation in response to horizontal overscroll. #overscroll-history-navigation

Touch initiated drag and drop Windows, Chrome OS
Touch drag and drop can be initiated through long press on a draggable element. #enable-touch-drag-drop

Enable navigation tracing Mac, Windows, Linux, Chrome OS, Android
This is to be used in conjunction with the trace-upload-url flag. WARNING: When enabled, Chrome will record performance data for every navigation and upload it to the URL specified by the trace-upload-url flag. The trace may include personally identifiable information (PII) such as the titles and URLs of websites you visit. #enable-navigation-tracing
Disable
Trace label for navigation tracing Mac, Windows, Linux, Chrome OS, Android
This is to be used in conjunction with the enable-navigation-tracing flag. Please select the label that best describes the recorded traces. This will choose the destination the traces are uploaded to. If you are not sure, select other. If left empty, no traces will be uploaded. #trace-upload-url

Enable the "stale-while-revalidate" cache directive Mac, Windows, Linux, Chrome OS, Android
Enable the experimental implementation of the "Cache-Control: stale-while-revalidate" directive. This permits servers to specify that some resources may be revalidated in the background to improve latency. #enable-stale-while-revalidate

Service worker navigation preload. Mac, Windows, Linux, Chrome OS, Android
Enable web pages to use the experimental service worker navigation preload API. #enable-service-worker-navigation-preload

Substring matching for Autofill suggestions Mac, Windows, Linux, Chrome OS, Android
Match Autofill suggestions based on substrings (token prefixes) rather than just prefixes. #enable-suggestions-with-substring-match
Disable
Speculative launch of service workers. Mac, Windows, Linux, Chrome OS, Android
Speculatively launch service workers using touch and mouse events. #enable-speculative-launch-service-worker

Managed bookmarks for supervised users Mac, Windows, Linux, Chrome OS, Android
Enable the managed bookmarks folder for supervised users. #enable-supervised-user-managed-bookmarks-folder
Disable
LCD text antialiasing Mac, Windows, Linux, Chrome OS
If disabled, text is rendered with grayscale antialiasing instead of LCD (subpixel) when doing accelerated compositing. #lcd-text-aa

Google Payments card saving checkbox Mac, Windows, Linux, Chrome OS, Android
Show the checkbox to offer local saving of a credit card downloaded from the server. #enable-offer-store-unmasked-wallet-cards

Offline Auto-Reload Mode Mac, Windows, Linux, Chrome OS, Android
Pages that fail to load while the browser is offline will be auto-reloaded when the browser is online again. #enable-offline-auto-reload

Only Auto-Reload Visible Tabs Mac, Windows, Linux, Chrome OS, Android
Pages that fail to load while the browser is offline will only be auto-reloaded if their tab is visible. #enable-offline-auto-reload-visible-only

Show Saved Copy Button Mac, Windows, Linux, Chrome OS, Android
When a page fails to load, if a stale copy of the page exists in the browser cache, a button will be presented to allow the user to load that stale copy. The primary enabling choice puts the button in the most salient position on the error page; the secondary enabling choice puts it secondary to the reload button. #show-saved-copy

Default tile width Mac, Windows, Linux, Chrome OS, Android
Specify the default tile width. #default-tile-width

Default tile height Mac, Windows, Linux, Chrome OS, Android
Specify the default tile height. #default-tile-height

Gesture requirement for media playback Mac, Windows, Linux, Chrome OS, Android
User gesture requirement for playing media elements. Disabling this will allow autoplay to work. #disable-gesture-requirement-for-media-playback
Disable
Media playback in cross-origin iframes requires user gesture Mac, Windows, Linux, Chrome OS
Playing media elements in cross-origin iframes requires user gesture. Disabling this will allow autoplay in cross-origin iframes to work. #cross-origin-media-playback-requires-user-gesture

Simple Cache for HTTP Mac, Windows, Linux, Chrome OS
The Simple Cache for HTTP is a new cache. It relies on the filesystem for disk space allocation. #enable-simple-cache-backend

Device Discovery Notifications Mac, Windows, Linux, Chrome OS
Device discovery notifications on local network. #device-discovery-notifications

Print Preview Registration Promos Mac, Windows, Linux, Chrome OS
Enable registering unregistered cloud printers from print preview. #enable-print-preview-register-promos
Disable
XPS in Google Cloud Print Windows
XPS enables advanced options for classic printers connected to the Cloud Print with Chrome. Printers must be re-connected after changing this flag. #enable-cloud-print-xps
Disable
Hiding close buttons on inactive tabs when stacked Windows, Linux, Chrome OS
Hides the close buttons of inactive tabs when the tabstrip is in stacked mode. #disable-hide-inactive-stacked-tab-close-buttons
Disable
Spelling Feedback Field Trial Mac, Windows, Linux, Chrome OS, Android
Enable the field trial for sending user feedback to spelling service. #enable-spelling-feedback-field-trial
Disable
WebGL Draft Extensions Mac, Windows, Linux, Chrome OS, Android
Enabling this option allows web applications to access the WebGL Extensions that are still in draft status. #enable-webgl-draft-extensions
Enable
New profile management system Mac, Windows, Linux, Chrome OS, Android
Enables the new profile management system, including profile lock and the new avatar menu UI. #enable-new-profile-management

Identity consistency between browser and cookie jar Mac, Windows, Linux, Chrome OS, Android
When enabled, the browser manages signing in and out of Google accounts. #enable-account-consistency

Enable new gaia password-separated sign in flow Mac, Windows, Linux
When enabled, signing in to the browser will use a new gaia password-separated sign in flow. #enable-password-separated-signin-flow

Use material design user menu Mac, Windows, Linux
When enabled, the desktop user menu will be switched to the material design version with a more intuitive flow. #show-material-design-user-menu

Google profile name and icon Mac, Windows, Linux
Enables using Google information to populate the profile name and icon in the avatar menu. #enable-google-profile-info
Disable
Zero-copy rasterizer Mac, Windows, Linux, Chrome OS, Android
Raster threads write directly to GPU memory associated with tiles. #enable-zero-copy

The new bookmark app system Mac, Windows, Linux, Chrome OS
Enables the new system for creating bookmark apps. #disable-new-bookmark-apps

Translate 2016Q2 UI Windows, Linux, Chrome OS
Improved triggering logic and look for Translate Bubble UI #translate-2016q2-ui

Translate Language by ULP Mac, Windows, Linux, Chrome OS, Android
Improved translate target language and triggering logic by considering information from User Language Profile (ULP). #translate-lang-by-ulp

Rect-based targeting in views Windows, Linux, Chrome OS
Rect-based targeting uses a heuristic to determine the most probable target of a gesture, where the touch region is represented by a rectangle. #disable-views-rect-based-targeting
Disable
Number of raster threads Mac, Windows, Linux, Chrome OS, Android
Specify the number of raster threads. #num-raster-threads

Permission Action Reporting Mac, Windows, Linux, Chrome OS, Android
Enables permission action reporting to Safe Browsing servers for opted in users. #enable-permission-action-reporting

Permissions Blacklist Mac, Windows, Linux, Chrome OS, Android
Enables the Permissions Blacklist, which blocks permissions for blacklisted sites for Safe Browsing users. #enable-permissions-blacklist

Single-click autofill Mac, Windows, Linux, Chrome OS, Android
Make autofill suggestions on initial mouse click on a form element. #enable-single-click-autofill

Cast Streaming hardware video encoding Mac, Windows, Linux, Chrome OS, Android
This option enables support in Cast Streaming for encoding video streams using platform hardware. #disable-cast-streaming-hw-encoding
Disable
Threaded scrolling Mac, Windows, Linux, Chrome OS, Android
Threaded handling of scroll-related input events. Disabling this will force all such scroll events to be handled on the main thread. Note that this can dramatically hurt scrolling performance of most websites and is intended for testing purposes only. #disable-threaded-scrolling
Disable
Show settings in a window Mac, Windows, Linux, Chrome OS
Settings will be shown in a dedicated window instead of as a browser tab. #enable-settings-window

Inert visual viewport. Mac, Windows, Linux, Chrome OS, Android
Experiment to have all APIs reflect the layout viewport. This will make window.scroll properties relative to the layout viewport. #inert-visual-viewport
Enable
Distance field text Mac, Windows, Linux, Chrome OS, Android
Text is rendered with signed distance fields rather than bitmap alpha masks. #distance-field-text

Extension Content Verification Mac, Windows, Linux, Chrome OS
This flag can be used to turn on verification that the contents of the files on disk for extensions from the webstore match what they're expected to be. This can be used to turn on this feature if it would not otherwise have been turned on, but cannot be used to turn it off (because this setting can be tampered with by malware). #extension-content-verification

User consent for extension scripts Mac, Windows, Linux, Chrome OS, Android
Require user consent for an extension running a script on the page, if the extension requested permission to run on all urls. #extension-active-script-permission
Enable
Embedded extension options Mac, Windows, Linux, Chrome OS
Display extension options as an embedded element in chrome://extensions rather than opening a new tab. #enable-embedded-extension-options
Disable
Drop sync credentials from password manager Mac, Windows, Linux, Chrome OS, Android
The password manager will not offer to save the credential used to sync. #drop-sync-credential

Experiments that message center always scroll up upon notification removal Mac, Windows, Linux, Chrome OS
Enables experiment that message center always scroll up when a notification is removed. #enable-message-center-always-scroll-up-upon-notification-removal
Disable
Enable Material Design policy page Mac, Windows, Linux, Chrome OS
If enabled, the chrome://md-policy URL loads the Material Design policy page. #enable-md-policy-page
Disable
Memory coordinator Windows, Linux, Chrome OS, Android
Enable memory coordinator instead of memory pressure listeners. #enable-memory-coordinator

Tab audio muting UI control Mac, Windows, Linux, Chrome OS
When enabled, the audio indicators in the tab strip double as tab audio mute controls. This also adds commands in the tab context menu for quickly muting multiple selected tabs. #enable-tab-audio-muting
Disable
Experimental Credential Manager API Mac, Windows, Linux, Chrome OS, Android
Enables an experimental implementation of the Credential Manager API. Don't enable this unless you know what you're doing. #enable-credential-manager-api

Reduce default 'referer' header granularity. Mac, Windows, Linux, Chrome OS, Android
If a page hasn't set an explicit referrer policy, setting this flag will reduce the amount of information in the 'referer' header for cross-origin requests. #reduced-referrer-granularity
Enable
Mark non-secure origins as non-secure Mac, Windows, Linux, Chrome OS, Android
Change the UI treatment for HTTP pages #mark-non-secure-as

Show in-form warnings for sensitive fields when the top-level page is not HTTPS Mac, Windows, Linux, Chrome OS, Android
Attaches a warning UI to any password or credit card fields detected when the top-level page is not HTTPS #enable-http-form-warning

Out of process iframes Mac, Windows, Linux, Chrome OS, Android
Highly experimental support for rendering cross-site iframes in separate processes. In this mode, documents will share a renderer process only if they are from the same web site. #enable-site-per-process
Disable
Top document isolation Mac, Windows, Linux, Chrome OS, Android
Highly experimental performance mode where cross-site iframes are kept in a separate process from the top document. In this mode, iframes from different third-party sites will be allowed to share a process. #enable-top-document-isolation
Disable
Use Blink's zoom for device scale factor. Mac, Windows, Linux, Chrome OS, Android
If enabled, Blink uses its zooming mechanism to scale content for device scale factor. #enable-use-zoom-for-dsf

Allow invalid certificates for resources loaded from localhost. Mac, Windows, Linux, Chrome OS, Android
Allows requests to localhost over HTTPS even when an invalid certificate is presented. #allow-insecure-localhost
Enable
Add to shelf Mac, Windows, Linux, Chrome OS
Enable the display of add to shelf banners, which prompt a user to add a web app to their shelf, or other platform-specific equivalent. #enable-add-to-shelf

Bypass user engagement checks Mac, Windows, Linux, Chrome OS, Android
Bypasses user engagement checks for displaying app banners, such as requiring that users have visited the site before and that the banner hasn't been shown recently. This allows developers to test that other eligibility requirements for showing app banners, such as having a manifest, are met. #bypass-app-banner-engagement-checks
Disable
Use Chrome Sync sandbox Mac, Windows, Linux, Chrome OS, Android
Connects to the testing server for Chrome Sync. #use-sync-sandbox
Disable
Load Media Router Component Extension Mac, Windows, Linux, Chrome OS
Loads the Media Router component extension at startup. #load-media-router-component-extension

Causes audio output streams to check if channel layouts other than the default hardware layout are available. Windows
Causes audio output streams to check if channel layouts other than the default hardware layout are available. Turning this on will allow the OS to do stereo to surround expansion if supported. May expose third party driver bugs, use with caution. #try-supported-channel-layouts
Disable
WebVR Mac, Windows, Linux, Chrome OS, Android
Enabling this option allows web applications to access experimental Virtual Reality APIs. #enable-webvr
Enable
V8 caching mode. Mac, Windows, Linux, Chrome OS, Android
Caching mode for the V8 JavaScript engine. #v8-cache-options

V8 caching strategy for CacheStorage. Mac, Windows, Linux, Chrome OS, Android
Caching strategy of scripts in CacheStorage for the V8 JavaScript engine. #v8-cache-strategies-for-cache-storage

Enable Clear browsing data counters. Mac, Windows, Linux, Chrome OS, Android
Shows data volume counters in the Clear browsing data dialog. #enable-clear-browsing-data-counters

Simplified full screen / mouse lock UI. Windows, Linux, Chrome OS
A simplified new user experience when entering page-triggered full screen or mouse pointer lock states. #simplified-fullscreen-ui

Experimental keyboard lock UI. Mac, Windows, Linux, Chrome OS
An experimental full screen with keyboard lock mode requiring users to hold Esc to exit. #experimental-keyboard-lock-ui

Block scripts loaded via document.write Mac, Windows, Linux, Chrome OS, Android
Disallows fetches for third-party parser-blocking scripts inserted into the main frame via document.write. #disallow-doc-written-script-loads

Enable exporting of tracing events to ETW. Windows
If enabled, trace events will be exported to the Event Tracing for Windows (ETW) and can then be captured by tools such as UIForETW or Xperf. #trace-export-events-to-etw
Enable
Enable or disable merging merging the key event (WM_KEY*) with char event (WM_CHAR). Windows
If disabled, Chrome will handle WM_KEY* and WM_CHAR separatedly. #merge-key-char-events

Use Windows Runtime MIDI API Windows
Use Windows Runtime MIDI API for WebMIDI (effective only on Windows 10 or later). #use-winrt-midi-api

Enable Push API background mode Mac, Windows, Linux
Enable background mode for the Push API. This allows Chrome to continue running after the last window is closed, and to launch at OS startup, if the Push API needs it. #enable-push-api-background-mode

Enable AppContainer Lockdown. Windows
Enables the use of an AppContainer on sandboxed processes to improve security. #enable-appcontainer

Enable offering upload of Autofilled credit cards Mac, Windows, Linux, Chrome OS, Android
Enables a new option to upload credit cards to Google Payments for sync to all Chrome devices. #enable-autofill-credit-card-upload

Enable Material Design bookmarks Mac, Windows, Linux, Chrome OS
If enabled, the chrome://bookmarks/ URL loads the Material Design bookmarks page. #enable-md-bookmarks

Enable Material Design feedback Mac, Windows, Linux, Chrome OS
If enabled, reporting an issue will load the Material Design feedback UI. #enable-md-feedback
Disable
Enable Material Design history Mac, Windows, Linux, Chrome OS
If enabled, the chrome://history/ URL loads the Material Design history page. #enable-md-history

Enable Material Design settings Mac, Windows, Linux, Chrome OS
If enabled, the chrome://settings/ URL loads the Material Design settings page. #enable-md-settings

SafeSearch URLs reporting. Mac, Windows, Linux, Chrome OS, Android
If enabled, inappropriate URLs can be reported back to SafeSearch. #safe-search-url-reporting

Force UI direction Mac, Windows, Linux, Chrome OS, Android
Explicitly force the UI to left-to-right (LTR) or right-to-left (RTL) mode, overriding the default direction of the UI language. #force-ui-direction

Enable Material Design extensions Mac, Windows, Linux, Chrome OS
If enabled, the chrome://extensions/ URL loads the Material Design extensions page. #enable-md-extensions

Enable Input IME API Windows, Linux
Enable the use of chrome.input.ime API. #enable-input-ime-api

Origin Trials Mac, Windows, Linux, Chrome OS, Android
Enables origin trials for controlling access to feature/API experiments. #enable-origin-trials

Brotli Content-Encoding. Mac, Windows, Linux, Chrome OS, Android
Enable Brotli Content-Encoding support. #enable-brotli

WebUSB Mac, Windows, Linux, Chrome OS, Android
Enable WebUSB support. #enable-webusb

Automatic tab discarding Mac, Windows
If enabled, tabs get automatically discarded from memory when the system memory is low. Discarded tabs are still visible on the tab strip and get reloaded when clicked on. Info about discarded tabs can be found at chrome://discards. #automatic-tab-discarding

WebGL 2.0 Mac, Windows, Linux, Chrome OS, Android
Allow web applications to access WebGL 2.0. #enable-es3-apis

New version of User Agent Intervention for WebFonts loading. Mac, Windows, Linux, Chrome OS, Android
Enable New version of User Agent Intervention for WebFonts loading. #enable-webfonts-intervention-v2

Trigger User Agent Intervention for WebFonts loading always. Mac, Windows, Linux, Chrome OS, Android
Enable to trigger User Agent Intervention for WebFonts loading always. This flag affects only when the intervention is enabled. #enable-webfonts-intervention-trigger
Enable
Group history by domain Mac, Windows, Linux, Chrome OS
Group history by website domain (i.e. google.com) on chrome://history. #enable-grouped-history
Enable
Maximum TLS version enabled. Mac, Windows, Linux, Chrome OS, Android
Set maximum enabled TLS version. #ssl-version-max

Token Binding. Mac, Windows, Linux, Chrome OS, Android
Enable Token Binding support. #enable-token-binding

Scroll Anchoring Mac, Windows, Linux, Chrome OS, Android
Adjusts scroll position to prevent visible jumps when offscreen content changes. #enable-scroll-anchoring

Disable Audio For Desktop Share Mac, Windows, Linux, Chrome OS, Android
With this flag on, desktop share picker window will not let the user choose whether to share audio. #disable-audio-support-for-desktop-share
Enable
Disable Desktop Share with tab source Mac, Windows, Linux, Chrome OS, Android
This flag controls whether users can choose a tab for desktop share. #tab-for-desktop-share
Enable
WebRTC H.264 software video encoder/decoder Mac, Windows, Linux, Chrome OS
When enabled, an H.264 software video encoder/decoder pair is included. If a hardware encoder/decoder is also available it may be used instead of this encoder/decoder. #enable-webrtc-h264-with-openh264-ffmpeg

Autofill sync credential Mac, Windows, Linux, Chrome OS, Android
How the password manager handles autofill for the sync credential. #protect-sync-credential

Autofill sync credential only for transactional reauth pages Mac, Windows, Linux, Chrome OS, Android
How the password manager handles autofill for the sync credential only for transactional reauth pages. #protect-sync-credential-on-reauth

Password import and export Mac, Windows, Linux, Chrome OS
Import and Export functionality in password settings. #password-import-export

Google branding in the context menu Mac, Windows, Linux, Chrome OS
Shows a Google icon next to context menu items powered by Google services. #enable-google-branded-context-menu
Enable
Pointer Events Mac, Windows, Linux, Chrome OS, Android
Enables support for the Pointer Events API. This is intended only for testing by web developers. #enable-pointer-events

Passive Event Listener Override Mac, Windows, Linux, Chrome OS, Android
Forces touchstart, touchmove, mousewheel and wheel event listeners (which haven't requested otherwise) to be treated as passive. This will break touch/wheel behavior on some websites but is useful for demonstrating the potential performance benefits of adopting passive event listeners. #passive-listener-default

Document Level Event Listeners Passive Default Mac, Windows, Linux, Chrome OS, Android
Forces touchstart, and touchmove event listeners on document level targets (which haven't requested otherwise) to be treated as passive. #document-passive-event-listeners

Touch Event Listeners Passive Default During Fling Mac, Windows, Linux, Chrome OS, Android
Forces touchstart, and first touchmove per scroll event listeners during fling to be treated as passive. #passive-event-listeners-due-to-fling

Enable loading IPC optimization for small resources. Mac, Windows, Linux, Chrome OS, Android
Enable loading IPC optimization for small resources. #enable-loading-ipc-optimization-for-small-resources

FontCache scaling Mac, Windows, Linux, Chrome OS, Android
Reuse a cached font in the renderer to serve different sizes of font for faster layout. #enable-font-cache-scaling

Framebusting requires same-origin or a user gesture Mac, Windows, Linux, Chrome OS, Android
Don't permit an iframe to navigate the top level browsing context unless they are same-origin or the iframe is processing a user gesture. #enable-framebusting-needs-sameorigin-or-usergesture

Web Payments Mac, Windows, Linux, Chrome OS
Enable Web Payments API integration, a JavaScript API for merchants. #web-payments

Fill passwords on account selection Mac, Windows, Linux, Chrome OS, Android
Filling of passwords when an account is explicitly selected by the user rather than autofilling credentials on page load. #fill-on-account-select

New audio rendering mixing strategy Mac, Windows, Linux, Android
Use the new audio rendering mixing strategy. #new-audio-rendering-mixing-strategy

Optimize background video playback. Mac, Windows, Linux, Chrome OS, Android
Disable video tracks when the video is played in the background to optimize performance. #disable-background-video-track

Task Scheduler Mac, Windows, Linux, Chrome OS, Android
Enables redirection of some task posting APIs to the task scheduler. #browser-task-scheduler

Feature Policy Mac, Windows, Linux, Chrome OS, Android
Enables granting and removing access to features through the Feature-Policy HTTP header. #enable-feature-policy

Gamepad Extensions Mac, Windows, Linux, Chrome OS, Android
Enabling this option allows web applications to access experimental extensions to the Gamepad APIs. #enable-gamepad-extensions

Switch 'Save as' menu labels to 'Download' Mac, Windows, Linux, Chrome OS
Enables an experiment to switch menu labels that use 'Save as...' to 'Download'. #saveas-menu-text-experiment
Enable
Generic Sensor Mac, Windows, Linux, Chrome OS, Android
Enable sensor APIs based on Generic Sensor API. #enable-generic-sensor

Throttle expensive background timers Mac, Windows, Linux, Chrome OS, Android
Enables intervention to limit CPU usage of background timers to 1%. #expensive-background-timer-throttling

Manage audio focus across tabs Mac, Windows, Linux, Chrome OS
Manage audio focus across tabs to improve the audio mixing. #enable-default-media-session

Persistence Toggle in Permission Prompts Windows, Linux, Chrome OS, Android
Whether to display a persistence toggle in permission prompts. #permission-prompt-persistence-toggle

Print Scaling. Mac, Windows, Linux, Chrome OS
If enabled, an option to scale documents will be available in print preview. #print-scaling

Cross process frames for guests Mac, Windows, Linux, Chrome OS
Highly experimental where guests such as <webview> are implemented on the out-of-process iframe infrastructure. #cross-process-guests

Media Remoting during Cast Tab Mirroring Mac, Windows, Linux, Chrome OS
When Casting a tab to a remote device, enabling this turns on an optimization that forwards the content bitstream directly to the remote device when a video is fullscreened. #media-remoting

Media Remoting during Cast Tab Mirroring: Encrypted content too Mac, Windows, Linux, Chrome OS
When Media Remoting is enabled, this flag must be enabled to allow the remoting of encrypted content. When disabled, only non-encrypted content can be remoted. #media-remoting-encrypted

No-State Prefetch Mac, Windows, Linux, Chrome OS, Android
"No-State Prefetch" pre-downloads resources to improve load times. "Prerender" does a full pre-rendering of the page, to improve load times even more. "Simple Load" does nothing and is similar to disabling the feature, but collects more metrics for comparison purposes. #enable-nostate-prefetch

Display the last used date of a credit card in autofill. Mac, Windows, Linux, Chrome OS, Android
If enabled, display the last used date of a credit card in autofill. #enable-autofill-credit-card-last-used-date-display

Custom-drawn Windows 10 Titlebar Windows
If enabled, Chrome will draw the titlebar and caption buttons instead of deferring to Windows. #windows10-custom-titlebar
Enable
Faster location.reload() Mac, Windows, Linux, Chrome OS, Android
Enable faster location.reload() to use a reload mode that revalidates only main resource forcibly. #enable-faster-location-reload

GDI Text Printing Windows
Use GDI to print text as simply text #gdi-text-printing

PostScript Printing Windows
Enable postscript generation in place of emf generation when printing to postscript capable printers. #postscript-printing

MIDIManager dynamic instantiation for Web MIDI. Mac, Windows, Linux, Chrome OS, Android
Enable MIDIManager dynamic instantiation for Web MIDI. #enable-midi-manager-dynamic-instantiation

Enable new USB backend Windows
Enables the new experimental USB backend for Windows. #new-usb-backend

Desktop to iOS promotions. Windows
Enable Desktop to iOS promotions, and allow users to see them if they are eligible. #enable-desktop-ios-promotions

Experimental contextual omnibox suggestion Mac, Windows, Linux, Chrome OS
Change omnibox contextual suggestions to an experimental source. Note that this is not an on/off switch for contextual omnibox and it only applies to suggestions provided before the user starts typing a URL or a search query (i.e. zero suggest). #enable-zero-suggest-redirect-to-chrome

New omnibox answers in suggest types Mac, Windows, Linux, Chrome OS, Android
Enables new types of answers in the omnibox suggest drop-down: currency conversions, dictionary definitions, sports scores, translations, and when is. #new-omnibox-answer-types

Omnibox entity suggestions Mac, Windows, Linux, Chrome OS
Enable receiving entity suggestions in Omnibox. #omnibox-entity-suggestions

Unavailable Experiments
WebRTC hardware video decoding Chrome OS, Android
Support in WebRTC for decoding video streams using platform hardware. #disable-webrtc-hw-decoding
Sorry, this experiment is not available on your platform.
WebRTC hardware video encoding Chrome OS, Android
Support in WebRTC for encoding video streams using platform hardware. #disable-webrtc-hw-encoding
Sorry, this experiment is not available on your platform.
WebRTC hardware h264 video encoding Chrome OS, Android
Support in WebRTC for encoding h264 video streams using platform hardware. #enable-webrtc-hw-h264-encoding
Sorry, this experiment is not available on your platform.
BLE Advertising in Chrome Apps Chrome OS
Enables BLE Advertising in Chrome Apps. BLE Advertising might interfere with regular use of Bluetooth Low Energy features. #enable-ble-advertising-in-apps
Sorry, this experiment is not available on your platform.
Scroll end effect Chrome OS
Experimental scroll end effect in response to vertical overscroll. #scroll-end-effect
Sorry, this experiment is not available on your platform.
Touch text selection strategy Android
Controls how text selection granularity changes when touch text selection handles are dragged. Non-default behavior is experimental. #touch-selection-strategy
Sorry, this experiment is not available on your platform.
TCP Fast Open Linux, Chrome OS, Android
Enable the option to send extra authentication information in the initial SYN packet for a previously connected client, allowing faster data send start. #enable-tcp-fast-open
Sorry, this experiment is not available on your platform.
Simulated hardware 'Ok Google' features Chrome OS
Enables an experimental version of 'Ok Google' hotword detection features that have a hardware dependency. #enable-hotword-hardware
Sorry, this experiment is not available on your platform.