Web Incubator CG ORG

A home for well-formed proposed incubations for the web platform. All proposals welcome.

👋 Ask your questions here! 👋

A simple starter kit for incubations

Web Components specifications

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Former home of import maps (now merged into HTML)

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Polyfill for `:focus-visible`

Connecting hardware to the web.

Web packaging format

An extension to the DOM event pattern to allow authors to disable support for preventDefault

A proposal for enabling seamless navigations between sites or pages

Polyfill for the inert attribute and property.

This proposal has been replaced by the Topics API.

APIs for scheduling and controlling prioritized tasks.

No description.

Observable API proposal

Expose the file system on the user’s device, so Web apps can interoperate with the user’s native applications.

A design and spec for ServiceWorker-based background synchronization

Wouldn't it be nice if `User-Agent` was a (set of) client hints?

Proposal to allow specifying a text snippet in a URL fragment

Proposed Web Monetization standard

Accessibility Object Model

verified autofill

TURTLEDOVE

[On hold] A proposal for an async key/value storage API for the web

The new navigation API provides a new interface for navigations and session history, with a focus on single-page application navigations.

Trust Token API

Attribution Reporting API

Direct Sockets API for the web platform

No description.

A browser API to enable developers signal the priorities of the resources they need to download.

Detection of shapes (faces, QR codes) in images

Repository for explainers and other documents related to the Isolated Web Apps proposal.

A repository for the Display Locking spec

API proposal for background downloading/uploading

Serial ports API for the platform.

No description.

A proposal to restrict sites from accessing a users' local network without permission

This repository is no longer active. ResizeObserver has moved out of WICG into

Directional focus navigation with arrow keys

No description.

Proposal for a programmable JS profiling API for collecting JS profiles from real end-user environments

Proposal to enable privacy-enhanced preloading

Use cases and requirements for standardizing element queries.

A proposal to add explicit APIs to the Web for querying and setting the visual viewport

A place for browsers and web developers to collaborate on user agent interventions.

Frame Timing API

A proposal for a Layout Instability specification

Web API for accessing Human Interface Devices (HID)

Lifecycle API to support system initiated discarding and freezing

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.

↔️ Proposal for local communication between browsers without the aid of a server.

Proposal for a strong boundary between a page and its embedded content

API for constructing CSS stylesheet objects

DevTools Protocol

Before install prompt API for installing web applications

Explainer for proposed web platform Shared Storage API

A way to format SMS messages for use with browser autofill features such as HTML’s autocomplete=one-time-code.

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Bundles of multiple resources, to improve loading JS and the Web.

Privacy-Preserving Ads

phone number verification

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Proposal to add an intrinsicsize attribute to media elements

Explainer for Cross-Origin Storage (COS), a content-addressable browser cache that shares large files across origins by SHA-256 hash, with k-anonymity-based availability gating to prevent cross-site tracking.

🚫 Old repository for AnimationWorklet specification ➡️ New repository: https://github.com/w3c/css-houdini-drafts

No description.

A way to create DOM and add it to the document without blocking the main thread.

Handwriting Recognition Web API Proposal

Web API for enumerating fonts on the local system

Prototyping and discussion around indexeddb observers.

API for web applications to handle files

Proposed web platform feature to add color management, wide gamut and high bit-depth support to the <canvas> element.

Web App Launch Handler

A web API proposal for watching for close requests (e.g. Esc, Android back button, ...)

performance.measureMemory API

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This is the repo where the CSS Houdini parser API will be worked on

Repository for the Web Smart Card Explainer

A proposal for an idle detection and notification API for the web

A set of policies that a site guarantees to adhere to, browsers enforce, and embedders can count on.

No description.

Explainer for the PEPC feature

Container Timing

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Heuristics to detect Single Page Apps soft navigations

Explainer showcasing a new web storage API, NativeIO

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Specification for the Client Hints infrastructure - privacy preserving proactive content negotiation

UUID V4

API proposal for managing multiple storage buckets

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video.requestVideoFrameCallback() incubation

Proposal for the addition of Curve25519 and Curve448 to the Web Cryptography API

No description.

Repository for hosting TTI specification and discussions around it.

This proposal introduces a new magic comment that signals to browsers that the functions in a JavaScript file are likely to be needed by the website. Spec draft: https://wicg.github.io/explicit-javascript-compile-hints-file-based/

A better beaconing 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.

Signature-based Resource Loading Restrictions

An explainer for the Raw Clipboard Access feature

Spec defining browser support for file/directory upload by drag-and-drop

proposal to add an API to the web for determining if related apps are installed

No description.

A Modest Content Security Proposal

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spec proposal for new web API: window.requestPostAnimationFrame

Controlled Frame API, available only to IWAs

Payment Request proposal

Experimenting with being explicit about user modality

No description.

An API that exposes some information about how powerful the user device is.

[On hold for now] A mechanism for origins to set their origin-wide configuration in a central location

API to get current keyboard mapping.

ARIA Accessible Notifications

Proposal for the addition of various modern algorithms to the Web Cryptography API, as well as feature detection for algorithm support

Explainer and spec for the Content Indexing proposal

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.

Repository for the website: https://wicg.io (staging site at: https://wicg.github.io/wicg.io)

`COEP: x-bikeshed-credentialless-unless-cors`

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.

A repository for the ServiceWorker static routing API.

No description.

A TextTrackCue based interface for arbitrary timed metadata, synchronized with audio or video media playback

Spec and explainer for the Scroll Anchoring web platform feature.

Specification for exposing input events to workers

Proposal for a Budget API

No description.

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".

No description.

Keyboard Lock

This repository contains the data related to the new proposed Web API -- Managed Device Web API.

Introduce security controls to same origin realms in web applications

No description.

CSS property to control scroll chaining

No description.

An `<install>` element might be nice.

This repo is being kept for historical purposes.

Description of overscroll and scrollend events

A prototype of an Edge worker that implements the Client Side A/B testing spec.

No description.

Customise browser native media controls buttons.

An API to allow developers transfer the ability to use restricted APIs to any target window in the frame tree.

Web Haptics API

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Crash reporting (from Web Perf WG)

A browser API to make developers aware of user preferences with regards to data savings

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Proposal to add encryption scheme support to Encrypted Media Extensions.

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Delayed Message Timing API

Wouldn't it be nice if `Accept-Language` was a client hint?

Former home of the custom state pseudo-class feature

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https://wicg.github.io/conditional-focus/

Asynchronously convert between HTMLImageElement, ImageData, and Blob.

Media Feeds

Redirection repo to the real spec

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Lock screen API

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Incubation for permissions.request()

Fixing HTML element references (IDREFS) on the Web

API proposal for periodic background synchronization of data and content.

Enable ATs to recognize and account for virtualized content when navigating a web page.

Gesture Delegation API proposal

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Device Bound Session Credentials for SSO WICG repository

Extensions to PointerEvents

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A spec for a suite of client hints, useful for content negotiation for responsive images

A proposal for a Custom Performance Entry specification.

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API to control user gesture navigations (swipe to navigate, pull-to-refresh)

Description for non-primary button click event

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A fork of Encrypted Media Extensions to add persistent-usage-record sessions

WICG draft for COOP with popups proposal

Moved to https://github.com/w3c/geolocation-sensor

Redirection repo to the real spec

No description.

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Incubation for permissions.revoke()

This repo has moved to the W3C org!

This repo has moved to the W3C org!

This repo has moved to the W3C org!

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