Interop Tests, GitHub Links, and How to Inspect Progress

Scott and Wes unpack Interop 2026 and the browser features finally aligning across engines, from container style queries and anchor positioning to scroll-driven animations and view transitions. They break down what it all means for day-to-day devs and how close we really are to a fully interoperable web.

Show Notes

• 00:00 Welcome to Syntax!
• 00:21 What is Interop?
  • Interop GitHub.
• 02:44 Container Style Queries.
• 09:32 Brought to you by Sentry.io.
• 09:57 Anchor Positioning.
• 12:01 CSS attr().
• 15:40 CSS Contrast-color.
• 19:10 CSS Zoom.
• 21:36 CSS Custom Highlight API.
• 24:02 Dialogs and Popovers.
• 25:44 Fetch Uploads and Ranges.
• 27:48 IndexedDB.
• 28:25 JSPI for Wasm.
• 29:05 Media Pseudo-Classes.
• 30:00 Navigation API.
• 31:53 Scoped Custom Element Registries.
• 32:40 Scroll-Driven Animations.
• 33:30 Scroll Snap.
• 36:50 CSS Shape().
• 38:25 View Transitions.
• 41:32 Web Compat.
• 42:29 WebRTC Improvements.
• 43:44 WebTransport.
• 45:44 Investigation Efforts.
  • 46:25 JPEG XL
  • 48:46 Mobile Testing.
  • 49:20 WebVTT.

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