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GitHub repositories
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ContentPerformancePolicy Archived
A set of policies that a site guarantees to adhere to, browsers enforce, and embedders can count on.
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EventListenerOptions Archived
An extension to the DOM event pattern to allow authors to disable support for preventDefault
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ScrollAnchoring Archived
Spec and explainer for the Scroll Anchoring web platform feature.
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WebApiDevice
This repository contains the data related to the new proposed Web API -- Managed Device Web API.
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ab-worker-prototype
A prototype of an Edge worker that implements the Client Side A/B testing spec.
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accessible-loading-and-searching-of-content Archived
Enable ATs to recognize and account for virtualized content when navigating a web page.
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animation-worklet Archived
🚫 Old repository for AnimationWorklet specification ➡️ New repository: https://github.com/w3c/css-houdini-drafts
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anonymous-iframe
Give developers the ability to embed third party HTML documents inside a new and ephemeral context. In return, COEP embedding rules can be relaxed. Thanks to anonymous iframe, developers using COEP can now embed third party content that do not.
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aspect-ratio Archived
This is a repo to explore, and hopefully define a way to maintain aspect ratio
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async-append Archived
A way to create DOM and add it to the document without blocking the main thread.
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audio-focus
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background-sync
A design and spec for ServiceWorker-based background synchronization
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bfcache-not-restored-reason
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bundle-preloading
Bundles of multiple resources, to improve loading JS and the Web.
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canvas-color-space
Proposed web platform feature to add color management, wide gamut and high bit-depth support to the <canvas> element.
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capability-delegation
An API to allow developers transfer the ability to use restricted APIs to any target window in the frame tree.
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client-hints-infrastructure
Specification for the Client Hints infrastructure - privacy preserving proactive content negotiation
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close-watcher
A web API proposal for watching for close requests (e.g. Esc, Android back button, ...)
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color-api
A proposal and draft spec for a Color object for the Web Platform, loosely influenced by the Color.js work. Heavily WIP, if you landed here randomly, please move along.
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compression-dictionary-transport
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construct-stylesheets
API for constructing CSS stylesheet objects
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container-queries Archived
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cq-usecases Archived
Use cases and requirements for standardizing element queries.
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cross-origin-embedder-policy Archived
CORPP (https://github.com/whatwg/html/issues/4175)
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css-parser-api
This is the repo where the CSS Houdini parser API will be worked on
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datacue
A TextTrackCue based interface for arbitrary timed metadata, synchronized with audio or video media playback
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dbsc
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directory-upload Archived
This spec aims to enable directory uploading by allowing a developer to read directory contents (files and sub-directories) asynchronously and be able to identify the directory structure.
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discourse-archive
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discourse-wicg-theme
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display-override
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document-isolation-policy
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encrypted-media-encryption-scheme Archived
Proposal to add encryption scheme support to Encrypted Media Extensions.
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entries-api
Spec defining browser support for file/directory upload by drag-and-drop
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eyedropper-api
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fenced-frame
Proposal for a strong boundary between a page and its embedded content
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file-system-access
Expose the file system on the user’s device, so Web apps can interoperate with the user’s native applications.
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geolocation-sensor Archived
Moved to https://github.com/w3c/geolocation-sensor
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get-installed-related-apps
proposal to add an API to the web for determining if related apps are installed
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handwriting-recognition
Handwriting Recognition Web API Proposal
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historical-web-payments-browser-api Archived
This repo is being kept for historical purposes.
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hsts-priming Archived
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idle-detection
A proposal for an idle detection and notification API for the web
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image-output Archived
Proposal for controlling output of `input` elements, focusing on images.
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img-conversion Archived
Asynchronously convert between HTMLImageElement, ImageData, and Blob.
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indexed-db-observers Archived
Prototyping and discussion around indexeddb observers.
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ink-enhancement
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input-for-workers Archived
Specification for exposing input events to workers
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intervention-reporting
Intervention reporting (from Web Perf WG)
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interventions Archived
A place for browsers and web developers to collaborate on user agent interventions.
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intrinsicsize-attribute Archived
Proposal to add an intrinsicsize attribute to media elements
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isolated-web-apps
Repository for explainers and other documents related to the Isolated Web Apps proposal.
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isolation Archived
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js-self-profiling
Proposal for a programmable JS profiling API for collecting JS profiles from real end-user environments
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kv-storage Archived
[On hold] A proposal for an async key/value storage API for the web
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lang-client-hint Archived
Wouldn't it be nice if `Accept-Language` was a client hint?
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layout-instability
A proposal for a Layout Instability specification
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local-peer-to-peer
↔️ Proposal for local communication between browsers without the aid of a server.
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logical-sizing-properties Archived
Specification for defining logical sizing in CSS
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manifest-incubations
Before install prompt API for installing web applications
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media-latency-hint
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media-source Archived
Media Source Extensions (vNext incubations on branches)
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mobile-document-request-api
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navigation-api
The new navigation API provides a new interface for navigations and session history, with a focus on single-page application navigations.
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network-error-logging Archived
This repo has moved to the W3C org!
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origin-agent-cluster Archived
A proposal for allowing web applications to origin-key their agent clusters. Now archived, as this specification has been merged into the HTML Standard. Formerly known as "origin isolation".
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origin-policy
[On hold for now] A mechanism for origins to set their origin-wide configuration in a central location
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overscroll-scrollend-events
Description of overscroll and scrollend events
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page-lifecycle
Lifecycle API to support system initiated discarding and freezing
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performance-entry Archived
A proposal for a Custom Performance Entry specification.
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performance-memory Archived
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periodic-background-sync
API proposal for periodic background synchronization of data and content.
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priority-hints Archived
A browser API to enable developers signal the priorities of the resources they need to download.
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proposals
A home for well-formed proposed incubations for the web platform. All proposals welcome.
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protected-auction-services-discussion
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pwa-url-handler
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request-post-animation-frame Archived
spec proposal for new web API: window.requestPostAnimationFrame
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resize-observer Archived
This repository is no longer active. ResizeObserver has moved out of WICG into
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responsive-image-client-hints
A spec for a suite of client hints, useful for content negotiation for responsive images
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savedata
A browser API to make developers aware of user preferences with regards to data savings
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screen-brightness
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scroll-to-text-fragment
Proposal to allow specifying a text snippet in a URL fragment
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server-timing Archived
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service-worker-static-routing-api
A repository for the ServiceWorker static routing API.
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shape-detection-api
Detection of shapes (faces, QR codes) in images
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sms-one-time-codes
A way to format SMS messages for use with browser autofill features such as HTML’s autocomplete=one-time-code.
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soft-navigations
Heuristics to detect Single Page Apps soft navigations
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sparrow
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storage-foundation-api-explainer
Explainer showcasing a new web storage API, NativeIO
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time-to-interactive Archived
Repository for hosting TTI specification and discussions around it.
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transfer-size Archived
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ua-client-hints
Wouldn't it be nice if `User-Agent` was a (set of) client hints?
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user-gesture-nav Archived
API to control user gesture navigations (swipe to navigate, pull-to-refresh)
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video-editing Archived
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visual-viewport
A proposal to add explicit APIs to the Web for querying and setting the visual viewport
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web-preferences-api
The Web Preference API aims to provide a way for sites to override the value for a given user preference (e.g. color-scheme preference) in a way that fully integrates with existing Web APIs.
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web-printing
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web_audio_playout
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webcrypto-secure-curves
Proposal for the addition of Curve25519 and Curve448 to the Web Cryptography API
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