WICG

Web Components specifications

Former home of import maps (now merged into HTML)

Polyfill for `:focus-visible`

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This proposal has been replaced by the Topics API.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.

Observable API proposal

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

verified autofill

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

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

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

Detection of shapes (faces, QR codes) in images

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

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

A repository for the Display Locking spec

API proposal for background downloading/uploading

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This repository is no longer active.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

Long Task API

Directional focus navigation with arrow keys

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

Lifecycle API to support system initiated discarding and freezing

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

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

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.

API for constructing CSS stylesheet objects

DevTools Protocol

Explainer for proposed web platform Shared Storage API

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

Before install prompt API for installing web applications

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

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

Privacy-Preserving Ads

A simple starter kit for incubations

Proposal to add an intrinsicsize attribute to media elements

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

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

Web API for enumerating fonts on the local system

Handwriting Recognition Web API Proposal

API for web applications to handle files

Prototyping and discussion around indexeddb observers.

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

Web App Launch Handler

performance.measureMemory API

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

Repository for the Web Smart Card Explainer

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

Device Memory

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

Explainer for the PEPC feature

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

Heuristics to detect Single Page Apps soft navigations

Explainer showcasing a new web storage API, NativeIO

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

UUID V4

👋 Ask your questions here! 👋

API proposal for managing multiple storage buckets

video.requestVideoFrameCallback() incubation

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

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:...

Repository for hosting TTI specification and discussions around it.