WICG/resize-observer

How to control the behavior of JavaScript imports

4,360

import-maps

Polyfill for `:focus-visible`

2,705

virtual-scroller

1,998

focus-visible

Connecting hardware to the web.

1,607

webusb

webpackage

EventListenerOptions

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

1,166

portals

This proposal has been replaced by the Topics API.

946

floc

Polyfill for the inert attribute and property.

934

inert

APIs for scheduling and controlling prioritized tasks.

920

scheduling-apis

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

909

view-transitions

811

file-system-access

A design and spec for ServiceWorker-based background synchronization

658

background-sync

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

639

ua-client-hints

Proposal to allow specifying a text snippet in a URL fragment

590

scroll-to-text-fragment

586

observable

Observable API proposal

Accessibility Object Model

582

aom

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

567

kv-storage

turtledove

navigation-api

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

Proposed Web Monetization standard

486

webmonetization

trust-token-api

attribution-reporting-api

Attribution Reporting API

Direct Sockets API for the web platform

360

direct-sockets

Detection of shapes (faces, QR codes) in images

329

shape-detection-api

A repository for the Display Locking spec

304

display-locking

dbsc

background-fetch

API proposal for background downloading/uploading

first-party-sets

serial

Serial ports API for the platform.

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

256

priority-hints

sanitizer-api

is-input-pending

proposals

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

216

spatial-navigation

Directional focus navigation with arrow keys

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

212

js-self-profiling

Use cases and requirements for standardizing element queries.

197

cq-usecases

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

184

isolated-web-apps

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

182

visual-viewport

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

177

interventions

frame-timing

layout-instability

A proposal for a Layout Instability specification

Lifecycle API to support system initiated discarding and freezing

158

page-lifecycle

Proposal to enable privacy-enhanced preloading

154

nav-speculation

speech-api

cookie-store

Asynchronous access to cookies from JavaScript

API for constructing CSS stylesheet objects

143

construct-stylesheets

Web API for accessing Human Interface Devices (HID)

137

webhid

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.

137

color-api

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

132

fenced-frame

devtools-protocol

sms-one-time-codes

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.

111

bundle-preloading

A proposal for translator and language detector APIs

105

translation-api

Before install prompt API for installing web applications

104

privacy-preserving-ads

Privacy-Preserving Ads

HCL

100

manifest-incubations

window-controls-overlay

netinfo

Proposal to add an intrinsicsize attribute to media elements

compression-dictionary-transport

intrinsicsize-attribute

animation-worklet

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

container-queries

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

local-peer-to-peer

Explainer for proposed web platform Shared Storage API

shared-storage

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

async-append

Prototyping and discussion around indexeddb observers.

indexed-db-observers

WebIDL

canvas-formatted-text

API for web applications to handle files

file-handling

canvas-color-space

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

local-font-access

Web API for enumerating fonts on the local system

performance.measureMemory API

performance-measure-memory

Digital Credentials, like driver's licenses

digital-credentials

Handwriting Recognition Web API Proposal

handwriting-recognition

web-app-launch

Web App Launch Handler

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

pwa-url-handler

ContentPerformancePolicy

A simple starter kit for incubations

starter-kit

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

css-parser-api

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

close-watcher

eyedropper-api

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

idle-detection

Explainer showcasing a new web storage API, NativeIO

storage-foundation-api-explainer

video-editing

uuid

UUID V4

client-hints-infrastructure

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

sparrow

private-network-access

A proposal for an Element Timing specification.

element-timing

document-picture-in-picture

video.requestVideoFrameCallback() incubation

video-rvfc

Repository for hosting TTI specification and discussions around it.

time-to-interactive

digital-goods

Heuristics to detect Single Page Apps soft navigations

soft-navigations

An explainer for the Raw Clipboard Access feature

raw-clipboard-access

storage-buckets

API proposal for managing multiple storage buckets

pending-beacon

A better beaconing API

👋 Ask your questions here! 👋

admin

Repository for the Web Smart Card Explainer

web-smart-card

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.

100

web-preferences-api