Groups

Work in progress. This page displays groups of features in a tree structure. Groups have not yet been finalized, expect frequent changes.

• Canvas

  • <canvas>
  • 2D canvas
  • 2D canvas opacity
  • Color management for 2D canvas
  • Desynchronized 2D canvas
  • willReadFrequently
  • contextlost and contextrestored
  • Canvas createConicGradient()
  • Canvas reset()
  • Canvas roundRect()
  • Offscreen canvas
• Clipboard

  • Async clipboard
  • Clipboard events
  • ClipboardItem.supports()
  • Read unsanitized clipboard data
• Credential management

  • Credential management
  • Federated credential management
  • Federated credentials
  • Password credentials
  • WebOTP
• CSS

  • Color types

    • color()
    • currentColor
    • HSL
    • HWB
    • Lab and LCH
    • Named colors
    • Oklab and Oklch
    • RGB
    • System colors
  • Containment

    • Inline-size containment
    • contain-intrinsic-size
    • Layout containment
    • Paint containment
    • Size containment
    • Style containment
    • Container queries
    • Container style queries
  • CSS environment variables

    • Safe area inset environment variables
  • Fonts

    • Typographic font features

      • font-feature-settings
      • font-kerning
      • font-language-override
      • font-variant
      • font-variant-caps
      • font-variant-east-asian
      • font-variant-emoji
      • font-variant-ligatures
      • font-variant-numeric
      • font-variant-position
    • Font synthesis

      • font-synthesis
      • font-synthesis-position
      • font-synthesis-small-caps
      • font-synthesis-style
      • font-synthesis-weight

    • COLRv1
    • font-display
    • @font-face
    • font-optical-sizing
    • font-palette
    • font-palette animation
    • font-size-adjust
    • font-variant-alternates
    • font-variation-settings
  • Gradients

    • Conic gradients
    • Gradient interpolation
  • Layout

    • Flexbox

      • Flexbox
      • Flexbox gap
    • Grid

      • Grid
      • Grid animation
      • Subgrid

    • Column breaks
    • Masonry
    • Page breaks
    • Sticky positioning
  • Media queries

    • color-gamut media query
    • display-mode media query
    • dynamic-range media query
    • Interaction media queries
    • inverted-colors media query
    • Media queries
    • Media query range syntax
    • Overflow media queries
    • prefers-color-scheme media query
    • prefers-contrast media query
    • prefers-reduced-data media query
    • prefers-reduced-motion media query
    • prefers-reduced-transparency media query
    • scripting media query
    • Update frequency media query
    • video-dynamic-range media query
  • Selectors

    • :default
    • :dir()
    • :focus-visible
    • :has()
    • :is()
    • :modal
    • :nth-child() (initial support)
    • :nth-child() of <selector>
    • ::spelling-error and ::grammar-error
    • :user-valid and :user-invalid
    • :where()
  • Transforms

    • Individual transform properties
    • 2D transforms
    • 3D transforms
  • Units

    • cap unit
    • ic unit
    • lh unit
    • Viewport units
  • White space

    • tab-size
    • text-wrap-mode
    • white-space
    • white-space-collapse

  • abs() and sign()
  • accent-color
  • Alt text for generated content
  • appearance
  • aspect-ratio
  • backdrop-filter
  • background-clip
  • background-clip: text
  • Border images
  • calc()
  • calc() constants
  • caret-color
  • Cascade layers
  • color-mix()
  • color-scheme
  • content-visibility
  • counter-set
  • @counter-style
  • Custom properties
  • display animation
  • pow(), sqrt(), hypot(), log(), and exp()
  • field-sizing
  • Forced colors
  • Hyphenation
  • image-set()
  • @import
  • initial-letter
  • light-dark()
  • line-clamp
  • linear() easing
  • Logical properties
  • margin-trim
  • min(), max(), and clamp()
  • Motion path
  • Nesting
  • object-view-box
  • opacity
  • overflow
  • overlay
  • paint()
  • paint-order
  • Relative colors
  • resize (CSS property)
  • round(), mod(), and rem()
  • @scope
  • @starting-style
  • @supports
  • text-indent
  • text-spacing-trim
  • text-wrap: balance
  • text-wrap: nowrap
  • text-wrap: pretty
  • transition-behavior
  • sin(), cos(), tan(), asin(), acos(), atan(), and atan2() (CSS)
  • Two-value display property
  • user-select
  • View transitions
  • will-change
  • z-index
• File system access

  • File system access
  • Origin private file system
• HTML

  • Custom elements

    • Autonomous custom elements
    • Customized built-in elements
    • Form-associated custom elements
    • :state()
  • Forms

    • :autofill
    • <button>
    • Constraint validation API
    • <datalist>
    • <fieldset> and <legend>
    • <form>
    • Form-associated custom elements
    • :indeterminate
    • <label>
    • <output>
    • <progress>
    • :read-only and :read-write
    • <input type="search">
    • <select>
    • showPicker() for <input>
    • showPicker() for <select>
    • <textarea>
    • writingsuggestions
  • HTML elements

    • <a>
    • <abbr>
    • <address>
    • <article>
    • <aside>
    • <audio>
    • <b>
    • <base>
    • <bdi>
    • <bdo>
    • <blockquote>
    • <body>
    • <br>
    • <button>
    • <canvas>
    • <cite>
    • <code>
    • <data>
    • <del>
    • <details>
    • Mutually exclusive <details> elements
    • <dfn>
    • <dialog>
    • <div>
    • <em>
    • <embed>
    • <fieldset> and <legend>
    • <figure> and <figcaption>
    • <head>
    • <header> and <footer>
    • <h1> through <h6>
    • <hgroup>
    • <hr>
    • <html>
    • <i>
    • <iframe>
    • Image maps
    • <img>
    • <ins>
    • <kbd>
    • <label>
    • <link>
    • <ol>, <ul>, and <li>
    • <main>
    • <mark>
    • <menu>
    • <meta>
    • <nav>
    • <object>
    • <output>
    • <p>
    • <picture>
    • <pre>
    • <progress>
    • <q>
    • <s>
    • <samp>
    • <script> and <noscript>
    • <search>
    • <section>
    • <select>
    • <slot>
    • <small>
    • <source>
    • <span>
    • <strong>
    • <style>
    • <sub> and <sup>
    • Tables
    • <template>
    • Text tracks
    • <textarea>
    • <time>
    • <title>
    • <u>
    • <var>
    • <video>
    • <wbr>
  • Media elements

    • <audio>
    • Audio and video tracks
    • controlslist
    • fastSeek()
    • Media element pseudo-classes
    • preservesPitch
    • requestVideoFrameCallback()
    • <source>
    • Text tracks
    • <video>

  • blocking="render"
  • Declarative shadow DOM
  • hidden="until-found"
  • Inert elements
  • Popover
  • <ruby>
  • tabindex
• JavaScript

  • Collections

    • Arrays

      • Array (initial support)
      • Array at()
      • Array by copy
      • Array copyWithin()
      • Array fill()
      • Array find() and findIndex()
      • Array findLast() and findLastIndex()
      • Array flat() and flatMap()
      • Array.from()
      • Array.fromAsync()
      • Array includes()
      • Array.isArray()
      • Array iteration methods
      • Array iterators
      • Array.of()
      • Array splice()
      • Stable array sort
    • Maps

      • Array grouping
      • Map (initial support)
    • Sets

      • Set (initial support)
      • Set methods
    • Typed arrays

      • Array at()
      • Array by copy
      • Array copyWithin()
      • Array fill()
      • Array find() and findIndex()
      • Array findLast() and findLastIndex()
      • Array.from()
      • Array includes()
      • Array.of()
      • Float16Array
      • Typed array iteration methods
      • Typed array iterators
      • Typed arrays (initial support)

    • WeakMap
    • WeakSet
  • Internationalization

    • Intl
    • Intl.DisplayNames
    • Intl.DurationFormat
    • Intl.ListFormat
    • Intl.Locale
    • Intl.Locale info
    • Intl.PluralRules
    • Intl.RelativeTimeFormat
    • Intl.Segmenter
  • Iterators

    • Array iterators
    • Iterator methods
    • Typed array iterators
  • JSON

    • JSON
    • JSON import attributes
    • JSON source text access
  • Primitive types

    • Strings

      • String at()
      • String codePointAt() and fromCodePoint()
      • String includes()
      • String matchAll()
      • String normalize()
      • String padStart() and padEnd()
      • String raw()
      • String repeat()
      • String replaceAll()
      • String startsWith() and endsWith()
      • String trimStart() and trimEnd()
      • String isWellFormed() and toWellFormed()

    • Date
    • Math and numbers
    • String (initial support)
  • Promises

    • Promise (initial support)
    • Promise.allSettled()
    • Promise.any()
    • Promise finally()
    • Promise.try()
    • Promise.withResolvers()

  • Async functions
  • Async generators
  • Atomics.waitAsync
  • BigInt
  • Classes
  • Functions
  • Generators
  • Proxy and Reflect
  • SharedArrayBuffer and Atomics
  • Temporal
  • Weak references
• JavaScript modules

  • JavaScript modules
  • JavaScript modules in service workers
  • JavaScript modules in shared workers
  • JavaScript modules in workers
• Print media

  • window.print()
  • Print events
• Progressive web app

  • Window Controls Overlay
• Resource timing

  • Resource size
  • Resource timing (initial support)
• Scrolling

  • Scroll-driven animations
  • scrollIntoView()
  • Scroll snap
  • Scroll to text fragment
  • scrollbar-color
  • scrollbar-gutter
  • scrollbar-width
  • scrollend
• Sensors

  • Accelerometer
  • Device orientation events
  • Gravity sensor
  • Gyroscope
  • Orientation Sensor
• Web Speech API

  • Speech recognition
  • Speech synthesis
• Streams

  • Asynchronously iterable streams
  • Streams
• SVG

  • Opacity (SVG)
• Text fragments

  • Scroll to text fragment
  • ::target-text
• Web Audio

  • AudioWorklet
  • OfflineAudioContext
  • Web Audio
• Web Components

  • Declarative shadow DOM
  • Shadow DOM
  • <slot>
  • Imperative slot assignment
  • <template>
• WebDriver

  • WebDriver
  • WebDriver BiDi
• WebGL

  • WebGL
  • Color management for WebGL
  • Desynchronized WebGL canvas
  • WebGL OES_draw_buffers_indexed extension
• WebRTC

  • WebRTC
  • WebRTC encoded transform
  • WebRTC SCTP information

Ungrouped features

• Abortable fetch
• AbortController and AbortSignal
• AbortSignal.any()
• Anchor positioning
• animation-composition
• ARIA attribute reflection
• Audio session
• Autofocus
• AVIF
• Background fetch
• Background sync
• baseline-source
• BroadcastChannel
• checkVisibility()
• Compression streams
• CPU compute pressure
• Constructed stylesheets
• Contact picker
• CSS import attributes
• Device posture
• dirname
• document.caretPositionFromPoint()
• Document picture-in-picture
• EditContext
• Eyedropper
• Fetch
• Fetch metadata request headers
• Fetch priority
• Fullscreen API
• Geolocation
• Custom highlights
• HTML media capture
• HTTP/1.1
• HTTP/2
• HTTP/3
• Idle detection
• Credentialless iframes
• srcdoc
• Import maps
• input (event)
• Intersection observer
• Intersection observer visibility tracking
• JPEG XL
• Keyboard lock
• Keyboard map
• Lazy-loading images and iframes
• Managed media source
• Masks
• MathML
• Media capture
• Media session
• Media source
• messageerror
• <link rel="modulepreload">
• Mouse events
• Navigation API
• Notifications
• Unsanitized HTML parsing methods
• Permissions
• Picture-in-picture (video)
• Pointer lock
• Preloading responsive images
• Presentation API
• Profiler
• Push messages
• Referrer policy
• Regular expressions
• Registered custom properties
• requestAnimationFrame()
• requestAnimationFrame() in workers
• Resizable buffers
• Scheduler API
• Screen orientation
• Screen orientation lock
• Screen wake lock
• Serializable errors
• Server timing
• Storage access
• Storage buckets
• structuredClone()
• Transferable ArrayBuffer
• translate attribute
• Trusted types
• URL.canParse()
• URLPattern
• User activation
• Small, large, and dynamic viewport units
• Visual viewport API
• WebAssembly SIMD
• Web animations
• Web Bluetooth
• Web Cryptography
• Locks
• Web MIDI
• Web NFC
• Web authentication
• Web authentication easy public key access
• WebCodecs
• WebGL2
• Color management for WebGL2
• Desynchronized WebGL2 canvas
• WebHID
• WebNN
• WebP
• WebSockets
• WebTransport
• WebUSB
• WebVTT
• WebVTT cue alignment
• WebVTT regions
• XMLHttpRequest
• XMLSerializer
• zoom