This page contains short url links of Web APIs and link to documents for web developers.

• WHATWG HTML (Living Standard)
• W3C HTML
  • W3C HTML5
  • W3C HTML5.1
  • W3C HTML5.2

• CSS
  • CSS Snapshot 2017
  • CSS Snapshot 2015
  • CSS Snapshot 2010
  • CSS Snapshot 2007
  • CSS Level 2 Revision 2 (CSS 2.2)
  • CSS Level 2 Revision 1 (CSS 2.1)
• Layout
  • CSS Exclusions Module Level 1
  • CSS Grid Layout Module - MDN
  • CSS Flexible Box Layout Module - MDN
  • CSS Masking Module Level 1 - MDN
  • CSS Multi-column Layout Module - MDN
  • CSS Regions Module Level 1
  • CSS Shapes Module Level 1
  • CSS Writing Modes
    • CSS Writing Modes Level 3
    • CSS Writing Modes Level 4
• CSS Animations - MDN
• CSS Backgrouds and Borders (Level 3)
• CSS Basic User Interface Module Level 3 (CSS3 UI)
• Colors
  • CSS Color Module Level 3
  • CSS Color Module Level 4
• Filter Effects Module Level 1
• Fonts
  • CSS Fonts Module Level 3
• Images
  • CSS Image Values and Replaced Content Module Level 3
  • CSS Image Values and Replaced Content Module Level 4
• Media Queries
  • Media Queries Level 3
  • Media Queries Level 4
• CSS Paged Media Module Level 3
• CSS Ruby Layout Module Level 1
• Selectors
  • Selectors Level 3
  • Selectors Level 4
• CSS Text Decoration Module Level 3
• CSS Transforms Module Level 1 - MDN
• CSS Transitions - MDN
• Values and Units
  • CSS Values and Units Module Level 3
• CSS Will Change Module Level 1

• DOM

• ECMAScript 201x (latest draft)
  • ECMAScript 2016 = ECMAScript 7th Edition
  • ECMAScript 2015 = ECMAScript 6th Edition
  • ECMAScript 5.1th Edition
  • ECMAScript 5th Edition (PDF)
• asm.js
• WebAssembly

• File API
• FileSystem API
• Indexed Database API
• Indexed Database API 2.0
• Quota Management API
• Storage (Living Standard)
• Web Storage (W3C)

• Web Animations - MDN
• Web Budget
• FIDO 2.0: Web API for accessing FIDO 2.0 credentials
• Fullscreen API (Living Standard)
• Gamepad - MDN
• Media Source Extensions
• Notifications API
• Permissions API
• Picture in Picture
• Pointer Lock
• Presentation API
• Push API
• Streams (Living Standard)
• Web Cryptography API
• Visual Viewport API

• Service Workers - MDN
  • Cache Interface - MDN
  • FetchEvent Interface - MDN
• Web Workers - MDN
• Worklets - MDN
  • Audio Worklet (in Web Audio API)
  • CSS Animation Worklet
  • CSS Paint API Level 1
  • CSS Layout API Level 1

• Beacon
• Brotli Compressed Data Format (RFC 7932)
• Cookie: HTTP State Management Mechanism (RFC 6265)
• Fetch (Living Standard)
• Network Information
• TCP and UDP Socket API
• The WebSocket API
• WebRTC 1.0: Real-time Communication Between Browsers
• XMLHttpRequest

• Basic Card Payment
• Payment Handler API
• Payment Method Identifiers
• Payment Method Manifest
• Payment Request API
• Web Payments HTTP API
• Web Payments HTTP Messages

• Ambient Light Sensor
• Battery Status API
• Web Bluetooth
• Device Memory
• Geolocation API
• Web GPIO API
• Web I2C API
• Web MIDI API
• Web NFC API
• DeviceOrientation Event
• Proximity Sensor
• Screen Orientation API
• Vibration

• Media Session Standard
• MediaStream Image Capture
• Media Source Extensions (MSE)
• Opus Audio Codec (RFC 6716)
• Portable Network Graphics (PNG)
  • Animation PNG (APNG)
• Shape Detection
• Scalable Vector Graphics (SVG)
• Scalable Vector Graphics (SVG) 2
• VP9 Video Codec
• Web Audio API - MDN
• WebGL
• WebGL 2
• WebM (WebM Container Guidelines)
  • Matroska
• WebVR

• Secure Contexts
• Content Security Policy
  • Content Security Policy Level 1
  • Content Security Policy Level 2
  • Content Security Policy Level 3
• Cross-Origin Resource Sharing
• HTTP Strict Transport Security (HSTS, RFC 6797)
• Public Key Pinning Extension for HTTP (RFC 7496)
• Referrer Policy
• Subresource Integrity
• [Web of Things (WoT) Security and Privacy Considerations](http://webapi.link/wotsecurity9
• Credential Management Level 1
• Web Authentication: An API for accessing Public Key Credentials Level 1

• Frame Timing
• High Resolution Time
  • High Resolution Time Level 1 (outdated)
  • High Resolution Time Level 2
• Navigation Timing
  • Navigation Timing Level 2
• Page Visibility
• Paint Timing
• Performance Timeline
  • Perfromance Timeline Level 2
• Resource Timing
  • Resource Timing Level 1
  • Resource Timing Level 2
• User Timing

• Web App Manifest
• Compatibility (Living Standard)
• Console (Living Standard)
• Tracking Preference Expression (DNT)
• Encoding (Living Standard)
• Web IDL
• MathML
  • MathML 2
  • MathML 3
• microformats2
• The Web Robots Pages (robots.txt)
• Web Share API
• URL (Living Standard)

• Documents

  • MDN web docs
    • Web APIs
    • CSS Reference

• Implementation Status

  • CanIuse.com
  • Chrome Platform Status
  • Firefox Platform Status
    • Mozilla Specification Propositions
    • Mozilla Specification Propositions - issues
    • Firefox Roadmap
  • WebKit Feature Status
  • Edge Platfor Status
  • API Catalog by Microsoft

• API Usage Metrics

  • CSS usage statictics by Google
  • CSS usage on the web platform by Microsoft

• Bug/Issue Tracker

  • Chromium Issues
  • Bugzilla (Mozilla Firefox)
  • EdgeHTML issue tracker
    • Report a new issue
  • WebKit Bugzilla
    • Reporting Bugs
    • file a bug on the WebKit product