This site’s goal is to track how design tokens are making their way into our stylesheets. It grabs CSS files from a set of predetermined paths, then scans for CSS properties that should (ideally) be backed by a token.
Some values—like unset, inherit, and friends get a free pass and don’t count toward the stats. Same goes for files that don’t have any relevant properties: they’re left out of the calculation.
You can read more about how this site works here
Historical Design Token Propagation
Explore Paths
Please note: The percentages reflect propagation without taking into account the size of the files involved.
Average Propagation: 44.55%
browser/components/aboutlogins/content28.13%browser/components/aboutlogins/content/components44.34%browser/components/aboutlogins/content/components/input-field100%browser/components/aboutwelcome/content29.29%browser/components/asrouter/content/components/ASRouterAdmin31.43%browser/components/asrouter/content/components/menu-message84.21%browser/components/backup/content75.08%browser/components/contextualidentity/content0%browser/components/customkeys/contentNo Props Foundbrowser/components/downloads/content0%browser/components/enterprisepolicies/content11.11%browser/components/extensions0%browser/components/firefoxview39.79%browser/components/genai83.72%browser/components/genai/content78.33%browser/components/ipprotection/content70%browser/components/messagepreview40%browser/components/places/content100%browser/components/places/metadataViewer0%browser/components/preferences/dialogs54.76%browser/components/preferences/widgets/nav-notice66.67%browser/components/preferences/widgets/placeholder-message100%browser/components/preferences/widgets/security-privacy/security-privacy-card90.91%browser/components/preferences/widgets/setting-control100%browser/components/preferences/widgets/setting-groupNo Props Foundbrowser/components/preferences/widgets/setting-pane100%browser/components/preferences/widgets/sync-engine-list100%browser/components/privatebrowsing/contentNo Props Foundbrowser/components/profiles/content73.11%browser/components/protections/content21.35%browser/components/screenshots33.34%browser/components/screenshots/overlay33.33%browser/components/search/content45.92%browser/components/security33.33%browser/components/sidebar76.5%browser/components/tabbrowser/content66.67%browser/components/tabunloader/content50%browser/components/textrecognition26.67%browser/components/webrtc/content/webrtc-preview100%browser/extensions/newtab/css83.1%browser/themes/linux7.41%browser/themes/linux/customizableui0%browser/themes/linux/downloadsNo Props Foundbrowser/themes/linux/places0%browser/themes/osx2.27%browser/themes/osx/customizableui53.33%browser/themes/osx/downloads0%browser/themes/osx/places0%browser/themes/shared21.78%browser/themes/shared/addons52.27%browser/themes/shared/controlcenter50%browser/themes/shared/customizableui26.35%browser/themes/shared/downloads21.27%browser/themes/shared/identity-block5.88%browser/themes/shared/migration9.53%browser/themes/shared/places22.76%browser/themes/shared/preferences27.79%browser/themes/shared/privatebrowsing7.56%browser/themes/shared/search6.67%browser/themes/shared/syncedtabs7.5%browser/themes/shared/tabbrowser36.74%browser/themes/shared/translations69.77%browser/themes/windows5.17%browser/themes/windows/customizableui0%browser/themes/windows/downloads0%browser/themes/windows/places4.55%toolkit/content/widgets50.52%toolkit/content/widgets/moz-badge100%toolkit/content/widgets/moz-box-buttonNo Props Foundtoolkit/content/widgets/moz-box-group100%toolkit/content/widgets/moz-box-item100%toolkit/content/widgets/moz-box-linkNo Props Foundtoolkit/content/widgets/moz-breadcrumb-group100%toolkit/content/widgets/moz-button95.12%toolkit/content/widgets/moz-button-group100%toolkit/content/widgets/moz-card100%toolkit/content/widgets/moz-fieldset100%toolkit/content/widgets/moz-five-star100%toolkit/content/widgets/moz-input-color100%toolkit/content/widgets/moz-input-folder100%toolkit/content/widgets/moz-input-text81.82%toolkit/content/widgets/moz-labelNo Props Foundtoolkit/content/widgets/moz-message-bar100%toolkit/content/widgets/moz-page-header100%toolkit/content/widgets/moz-page-nav87.39%toolkit/content/widgets/moz-promo100%toolkit/content/widgets/moz-reorderable-list50%toolkit/content/widgets/moz-select96.55%toolkit/content/widgets/moz-toggle89.66%toolkit/content/widgets/moz-visual-picker90.91%toolkit/content/widgets/panel-list62.5%toolkit/themes/linux/global0%toolkit/themes/linux/global/in-contentNo Props Foundtoolkit/themes/linux/mozapps/update25%toolkit/themes/mobile/global5.69%toolkit/themes/osx/global3.33%toolkit/themes/osx/global/in-content0%toolkit/themes/osx/mozapps/handling33.33%toolkit/themes/osx/mozapps/update29.41%toolkit/themes/shared16.8%toolkit/themes/shared/design-system/distNo Props Foundtoolkit/themes/shared/design-system/src100%toolkit/themes/shared/dirListing5%toolkit/themes/shared/downloads50%toolkit/themes/shared/in-content44.13%toolkit/themes/shared/media0%toolkit/themes/shared/pictureinpicture7.75%toolkit/themes/shared/tree4.55%toolkit/themes/windows/global2.32%toolkit/themes/windows/global/in-content100%toolkit/themes/windows/mozapps/handling33.33%toolkit/themes/windows/mozapps/update23.53%