Web API Learning Checklist (A–Z)

Based on MDN Web API Index Status: 2025 Edition — Complete reference list (~140 APIs) Format: [ ] = Not studied, [x] = Completed

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A

• Attribution Reporting API (Experimental)
• Audio Output Devices API (Experimental)

B

• Background Fetch API (Experimental)
• Background Synchronization API
• Background Tasks API
• Badging API
• Barcode Detection API (Experimental)
• Battery Status API
• Beacon API
• Web Bluetooth API (Experimental)
• Broadcast Channel API

C

• CSS Custom Highlight API
• CSS Font Loading API
• CSS Painting API (Experimental)
• CSS Properties and Values API
• CSS Typed Object Model API
• CSS Object Model (CSSOM)
• CSSOM View API
• Canvas API
• Channel Messaging API
• Clipboard API
• Compression Streams API
• Compute Pressure API (Experimental)
• Console API
• Contact Picker API (Experimental)
• Content Index API (Experimental)
• Cookie Store API
• Credential Management API

D

• Document Object Model (DOM)
• Device Memory API
• Device Orientation Events
• Device Posture API (Experimental)
• Document Picture-in-Picture API (Experimental)

E

• EditContext API (Experimental)
• Encoding API
• Encrypted Media Extensions API
• EyeDropper API (Experimental)

F

• Federated Credential Management (FedCM) API (Experimental)
• Fenced Frame API (Experimental)
• Fetch API
• File API
• File System API
• File and Directory Entries API
• Force Touch Events (Non-standard)
• Fullscreen API

G

• Gamepad API
• Geolocation API
• Geometry Interfaces

H

• HTML DOM API
• HTML Drag and Drop API
• HTML Sanitizer API (Experimental)
• History API
• Houdini APIs

I

• Idle Detection API (Experimental)
• MediaStream Image Capture API
• IndexedDB API
• Ink API (Experimental)
• InputDeviceCapabilities API (Experimental)
• Insertable Streams for MediaStreamTrack API (Experimental)
• Intersection Observer API
• Invoker Commands API

J

• JS Self-Profiling API (Experimental)

K

• Keyboard API (Experimental)

L

• Launch Handler API (Experimental)
• Local Font Access API (Experimental)

M

• Media Capabilities API
• Media Capture and Streams API (Media Stream)
• Media Session API
• Media Source API
• MediaStream Recording API

N

• Navigation API (Experimental)
• Network Information API

P

• Page Visibility API
• Payment Handler API (Experimental)
• Payment Request API
• Performance APIs
• Web Periodic Background Synchronization API (Experimental)
• Permissions API
• Picture-in-Picture API
• Pointer Events
• Pointer Lock API
• Popover API
• Presentation API (Experimental)
• Prioritized Task Scheduling API
• Push API

R

• Remote Playback API
• Reporting API
• Resize Observer API

S

• SVG API
• Screen Capture API
• Screen Orientation API
• Screen Wake Lock API
• Selection API
• Sensor APIs
• Server-Sent Events
• Service Worker API
• Shared Storage API (Experimental)
• Speculation Rules API (Experimental)
• Storage API
• Storage Access API
• Streams API
• Summarizer API (Experimental)

T

• Topics API (Experimental / Non-standard)
• Touch Events
• Translator and Language Detector APIs (Experimental)
• Trusted Types API

U

• UI Events
• URL API
• URL Fragment Text Directives
• URL Pattern API
• User-Agent Client Hints API (Experimental)

V

• Vibration API
• View Transition API
• Viewport Segments API (Experimental)
• VirtualKeyboard API (Experimental)

W

• Web Animations API
• Web Audio API
• Web Authentication API
• Web Components
• Web Crypto API
• Web Locks API
• Web MIDI API
• Web NFC API (Experimental)
• Notifications API
• Web Serial API (Experimental)
• Web Share API
• Web Speech API
• Web Storage API
• Web Workers API
• WebCodecs API
• WebGL (2D/3D Graphics)
• WebGPU API
• WebHID API (Experimental)
• WebOTP API (Experimental)
• WebRTC API
• WebSocket API
• WebTransport API
• WebUSB API (Experimental)
• WebVR API (Deprecated)
• WebVTT API
• WebXR Device API (Experimental)
• Window Controls Overlay API (Experimental)
• Window Management API (Experimental)

X

• XMLHttpRequest API

f

• fetchLater() API (Experimental)

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✅ Legend:

• [x] = Completed learning
• [ ] = Pending
• (Experimental) = Still under development or Chrome flag required
• (Non-standard) = Not part of current web standards
• (Deprecated) = Replaced by newer standard

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Maintained for continuous tracking of Web API mastery progress across all A–Z items.