W3docs

Tools

Browser Feature Detection

Quick check of which web platform features your browser exposes — storage, networking, graphics, media, and modern UX APIs. Probes run live in your browser; nothing is sent over the network.

0 of 34 features supported.

Storage

  • Web Storage

    localStorage + sessionStorage

  • IndexedDB
  • Cookies enabled

Networking

  • Fetch API
  • WebSockets
  • WebRTC
  • Service Workers
  • Beacon API
  • Push API
  • Background Sync

Device

  • Geolocation
  • Vibration API
  • Battery APIDeprecated

    Deprecated — removed from Firefox & Safari.

  • Clipboard API
  • Web Share API
  • Pointer Lock
  • Screen Orientation
  • WebMIDI

Graphics

  • WebGL
  • WebGL 2
  • WebGPU

    Chromium + Safari Tech Preview.

  • Web Animations API
  • Full Screen API

Media

  • Web Audio API
  • Media Capture

    getUserMedia

  • Notifications API

UX

  • Intersection Observer
  • Resize Observer
  • Mutation Observer
  • Web Authentication

    WebAuthn / passkeys

  • Payment Request API

Misc

  • File API
  • WebVRDeprecated

    Replaced by WebXR.

  • WebXR