flags.md

Chrome Flags

In order to modify flags, you must access chrome://flags

Privacy and Security

Enabled:

• #block-insecure-private-network-requests
• #clear-cross-site-cross-browsing-context-group-window-name
• #disable-process-reuse
  • When enabled, out-of-process iframes will not try to reuse compatible processes from unrelated tabs, which might decrease performance.
  • The flag is force-enabled in command-line flags, due to it is hidden in MS Edge(://flags)
• #disallow-doc-written-script-loads
  • Enabling it breaks --blink-settings="preferredColorScheme=1"
  • If you use Brave Browser with Fingerprinting blocking Strict, just enable the flag
• #dns-https-svcb
• #enable-browsing-data-lifetime-manager
• #enable-isolated-sandboxed-iframes
• #enable-web-bluetooth-new-permissions-backend
  • Go to chrome://settings/content/bluetoothDevices and disable the permission
  • On Android, Go to Settings → Site Settings → Bluetooth → disable the permission
• #enable-webrtc-hide-local-ips-with-mdns
• #enable-webview-tag-site-isolation
• #encrypted-client-hello
• #isolate-origins
• #partitioned-cookies
• #reduce-user-agent
• #reduce-user-agent-minor-version
• #reduce-user-agent-platform-oscpu
• #strict-origin-isolation
• #third-party-storage-partitioning
• #use-dns-https-svcb-alpn

Disabled:

• #clipboard-unsanitized-content
• #enable-async-dns
• #enable-fenced-frames
• #enable-first-party-sets
• #enable-generic-sensor-extra-classes
• #enable-prerender2
• #enable-webrtc-remote-event-log
• #enable-webusb-device-detection
• #enable-winrt-geolocation-implementation
  • You might need to enable it for Maps
• #fedcm
• #file-handling-api
• #font-access
• #full-user-agent
• #media-router-cast-allow-all-ips
• #sameparty-cookies-considered-first-party
• #show-autofill-type-predictions
• #system-keyboard-lock
• #trust-tokens
• #use-first-party-set
• #web-bundles
• #web-share
• #web-sql-access

Usability

Enabled

• #download-bubble, #download-bubble-v2
  • If you prefer MS Edge's download bubble style, then enable it, yet it might not be stable
• #enable-force-dark
  • Personal preference
• #enable-tab-audio-muting
• #extensions-menu-access-control
• #global-media-controls-modern-ui
• #scrollable-tabstrip
• #sharing-desktop-screenshots
• #sharing-desktop-screenshots-edit
• #side-panel-improved-clobbering
• #unified-side-panel

Disabled

• #in-product-help-demo-mode-choice
• #smooth-scrolling
• #username-first-flow
• #username-first-flow-fallback-crowdsourcing
• #username-first-flow-filling

Performance

Enabled

• #align-wakeups
• #back-forward-cache - Enabled force caching all pages (experimntal)
  • Make sure you are using command line flags
• #calculate-native-win-occlusion
• #enable-drdc
• #enable-parallel-downloading
• #enable-quic
• #enable-throttle-display-none-and-visibility-hidden-cross-origin-iframes
• #enable-vulkan - Disabled, due to causing completely black web pages and making browsers laggy
  • This flag is enabled by default on some/most devices
  • If you don't experience the same problem, keep this flag default
• #enable-webassembly-lazy-compilation
  • This flag is placebo when JITLess mode and/or Strict Security mode in MS Edge are activated
• #overlay-strategies - Occluded and unoccluded buffers (single-fullscreen,single-on-top,underlay)
  • Use this flag for Skylake or newer
• #quick-intensive-throttling-after-loading
• #subframe-shutdown-delay
• #unthrottled-nested-timeout

These flags are not intented for every device, but worth testing.

Forcing them might be a bad idea. Therefore, before using them, please check out the Problems section by typing chrome://gpu into the address bar (ignore WebGL errors)

• #enable-gpu-rasterization
• #enable-waitable-swap-chain
  • Enabled Max 1 Frame has the lowest delay but is most likely to drop frames, while 3 has the highest delay but is least likely to drop frames.
• #enable-zero-copy
• #ignore-gpu-blocklist
• #use-angle
  • According to the flag's description, using the OpenGL driver as the graphics backend may result in higher performance
  • D3D11 is used by default; D3D12 may improve performance if you are using Windows 10 1709 or newer.

Android

Note: These are "special flags" for Android. of course, above mentioned flags work too.

Enabled

• #enable-instant-start - Enabled
• #enable-site-isolation-for-password-sites - Enabled
• #enable-site-per-process - Enabled
• #omnibox-most-visited-tiles - Enabled

Disabled

• #contextual-search-longpress-resolve - Disabled
• #related-searches - Disabled

Special flags for Chromium forks

Brave Browser

These flags are from Nightly builds, some of them might not be available in other builds.

• #brave-adblock-cname-uncloaking - Enabled
  • If you notice DNS leak, disable it
• #brave-adblock-cosmetic-filtering - Enabled
• #brave-adblock-cosmetic-filtering-child-frames - Enabled
• #brave-adblock-csp-rules - Enabled
• #brave-adblock-default-1p-blocking - Enabled
• #brave-block-screen-fingerprinting - Enabled
• #brave-dark-mode-block - Enabled
• #brave-de-amp - Enabled
• #brave-debounce - Enabled
• #brave-domain-block - Enabled
• #brave-domain-block-1pes - Enabled
• #brave-ephemeral-storage - Enabled
• #brave-ephemeral-storage-keep-alive - Enabled
• #brave-extension-network-blocking - Enabled
• #brave-federated - Disabled
• #brave-first-party-ephemeral-storage - Enabled
• #brave-reduce-language - Enabled
• #brave-speedreader - Enabled
• #brave-vertical-tabs - Enabled
  • Personal preference; Useful when working with huge amount of tabs
• #restrict-websockets-pool - Enabled

Disable these flags incase you don't use them:

• #brave-ipfs - Disabled
• #brave-news - Disabled
• #native-brave-wallet - Disabled
• #skus-sdk - Disabled
  • Brave VPN

Ungoogled Chromium

• #extension-mime-request-handling - Always prompt for install
• #fingerprinting-canvas-image-data-noise - Enabled
• #fingerprinting-canvas-measuretext-noise - Enabled
• #fingerprinting-client-rects-noise - Enabled

Bromite

• #cleartext-permitted - Disabled
  • Disables accessing http websites
• #dns-request-partitioning - Enabled
• #num-raster-threads - 4

Edge Chromium

• #edge-automatic-https - Enabled
  • Go to edge://settings/privacy, enable Automatically switch to more secure connections with Automatic HTTPS and choose Always switch from HTTP to HTTPS (connection errors might occur more often)
• #edge-autoplay-user-setting-block-option - Enabled
  • Go to edge://settings/content/mediaAutoplay and set Control if audio and video play automatically on sites to Block
• #edge-enable-bfcache-features - Enabled
• #edge-global-media-controls - Enabled
• #edge-haptics-api - Disabled
• #edge-launch-timings - Disabled
• #edge-log-textfield-lag - Disabled
• #edge-msb-all-dse - Disabled
• #edge-msb-keyword-mode - Disabled
• #edge-playready-drm-win10 - Disabled
  • Needed for Netflix, Spotify, etc.
• #edge-reduce-user-agent-minor-version - Enabled
• #edge-robin - Enabled
• #edge-sdsm-emulate-acg - Enabled
• #edge-show-feature-recommendations - Disabled
• #edge-toast-winrt - Disabled
• #edge-widevine-drm - Disabled
  • Needed for Netflix, Spotify, etc.