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1. Identity & Auth

   Passkeys, WebAuthn, FedCM, Digital Credentials, autofill, payment confirmation, sign-in flows.

   43 demos

2. On-device AI

   Prompt API, Summariser, Translator, Language Detector, Proofreader, Writer, Rewriter, on-device speech.

   23 demos

3. CSS Layout

   Anchor positioning, container queries, scroll-state, view transitions, reading-flow, focusgroup, carousels.

   46 demos

4. CSS Typography

   Text wrap, text-box-trim, font-feature/variation, ruby, font-language-override, font-variant-emoji, line decorations.

   18 demos

5. CSS Visual

   Corner-shape, colour functions, dynamic-range-limit, accent-color, caret-, paint, image, table borders.

   22 demos

6. CSS Functions & Syntax

   if(), attr(), counter, sibling-index, custom @function, nesting, @supports/at-rule(), @property, shape(), progress().

   23 demos

7. Forms & Input

   Customizable <select>, popover, dialog, autofill event, focusgroup, interestfor, invoker commands, keyboard input.

   65 demos

8. Privacy & Security

   CSP, COOP, Document-Isolation-Policy, Local Network Access, partitioning, signature integrity, sandboxing, removals of legacy attack surface.

   74 demos

9. WebGPU

   Adapters, devices, textures, buffers, WGSL features, subgroups, dual-source blending, compatibility mode.

   34 demos

10. WebAssembly

    Wasm features: memory64, branch hints, JSPI, JS String Builtins, custom descriptors.

    5 demos

11. Workers & Runtime

    SharedWorker, Dedicated Workers, Service Workers, scheduling, freeze/resume lifecycle, runtime extras.

    29 demos

12. Media & Realtime

    WebRTC, MediaStream, getDisplayMedia, MediaSession, WebCodecs, MediaRecorder, captured surface, PiP, Speech API.

    35 demos

13. Storage & Files

    IndexedDB, OPFS, FileSystemObserver, quota, Clipboard, ClipboardItem, blob, file pickers.

    22 demos

14. Network & Loading

    Fetch, HTTP cache, No-Vary-Search, Speculation Rules, prerendering, prefetch, sec-purpose, WebTransport, sockets, Smart Card.

    55 demos

15. Performance & Timing

    Long Animation Frames, Event Timing, Soft Navigation, render-blocking, freeze, CPU performance, bimodal timings.

    16 demos

16. DOM & Interop

    DOM mutation, ranges, parser, navigation API, streaming, Observable, Atomics, async iterators, Intl, Temporal.

    58 demos

17. View Transitions

    View Transitions API: nested groups, element-scoped, waitUntil, pseudos, finished promise.

    6 demos

18. PWA & Installability

    Web App Manifest, install elements, scope extensions, Controlled Frame, Isolated Web Apps, window-drag, unframed mode.

    12 demos

19. Removals & Deprecations

    Features the platform is phasing out: deprecated APIs, removed legacy behaviours, paired with replacement guidance.

    12 demos

20. Miscellaneous

    Features that don't fit a single theme — interop fixes, platform hygiene, niche APIs.

    142 demos