Microsoft Edge 147 web platform release notes (Apr. 2026)

[captainbrosset]

Rendered article sections for review:

• Microsoft Edge 147 web platform release notes (Apr. 2026)

  • /web-platform/release-notes/147.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/web-platform/release-notes/147?branch=pr-en-us-3739
  • External preview: https://github.com/MicrosoftDocs/edge-developer/blob/web-platform-release-notes-147/microsoft-edge/web-platform/release-notes/147.md
  • Planned live: https://learn.microsoft.com/microsoft-edge/web-platform/release-notes/147
  • New article.

• Site compatibility-impacting changes coming to Microsoft Edge

  • /web-platform/site-impacting-changes.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/web-platform/site-impacting-changes?branch=pr-en-us-3739
  • External preview: https://github.com/MicrosoftDocs/edge-developer/blob/web-platform-release-notes-147/microsoft-edge/web-platform//site-impacting-changes.md
  • Before/live: https://learn.microsoft.com/microsoft-edge/web-platform/site-impacting-changes
  • Added row: Remove inline XSLT for production of SVG.

• Microsoft Edge 146 web platform release notes (Mar. 2026)

  • /web-platform/release-notes/146.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/web-platform/release-notes/146?branch=pr-en-us-3739
  • External preview: https://github.com/MicrosoftDocs/edge-developer/blob/web-platform-release-notes-147/microsoft-edge/web-platform/release-notes/146.md
  • Before/live: https://learn.microsoft.com/microsoft-edge/web-platform/release-notes/146
  • Removed sections:
    • CSS update: decoupling of Width and Style properties
    • Timeline named range "scroll"
    • JSON and style support for link rel=modulepreload
    • path attribute on SVG <textPath> element
    • Device Memory API limits
  • Added sections:
    • LCP: match spec'd behavior for emitting candidates
    • Navigation API: add post-commit handler from precommit
    • Selective Permissions Intervention
  • Changed heading from:
    PrerenderUntilScript
    to:
    prerender_until_script Speculation Rules API action
  • Changed heading from:
    WebAudio Configurable Render Quantum
    to:
    WebAudio configurable render quantum
  • Changed heading from:
    UserMediaElement
    to:
    <usermedia> HTML element
  • Removed /en-us/ from URLs.
  • Abbreviated month names in OT sections.

• Microsoft Edge 145 web platform release notes (Feb. 2026)

  • /web-platform/release-notes/145.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/web-platform/release-notes/145?branch=pr-en-us-3739
  • External preview: https://github.com/MicrosoftDocs/edge-developer/blob/web-platform-release-notes-147/microsoft-edge/web-platform/release-notes/145.md
  • Before/live: https://learn.microsoft.com/microsoft-edge/web-platform/release-notes/145
  • Removed sections:
    • IDNA ContextJ rules
    • The dropEffect value is preserved from dragover to drop events
  • Added sections:
    • Crash Reporting key-value API
    • Reduced User-Agent strings by default
    • Trusted Types spec alignment
    • WebGPU subgroup_uniformity feature
  • Removed /en-us/ from URLs.
  • Abbreviated month names in OT sections.

• Microsoft Edge 144 web platform release notes (Jan. 2026)

  • /web-platform/release-notes/144.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/web-platform/release-notes/144?branch=pr-en-us-3739
  • External preview: https://github.com/MicrosoftDocs/edge-developer/blob/web-platform-release-notes-147/microsoft-edge/web-platform/release-notes/145.md
  • Before/live: https://learn.microsoft.com/microsoft-edge/web-platform/release-notes/144
  • Removed /en-us/ from URLs.

• Microsoft Edge 141 web platform release notes (Oct. 2025)

  • /web-platform/release-notes/141.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/web-platform/release-notes/141?branch=pr-en-us-3739
  • External preview: https://github.com/MicrosoftDocs/edge-developer/blob/web-platform-release-notes-147/microsoft-edge/web-platform/release-notes/145.md
  • Before/live: https://learn.microsoft.com/microsoft-edge/web-platform/release-notes/141
  • Removed /en-us/ from URLs.

• Microsoft Edge 137 web platform release notes (May 2025)

  • /web-platform/release-notes/137.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/web-platform/release-notes/137?branch=pr-en-us-3739
  • External preview: https://github.com/MicrosoftDocs/edge-developer/blob/web-platform-release-notes-147/microsoft-edge/web-platform/release-notes/137.md
  • Before/live: https://learn.microsoft.com/microsoft-edge/web-platform/release-notes/137
  • Removed /en-us/ from URLs.

• Microsoft Edge 135 web platform release notes (Apr. 2025)

  • /web-platform/release-notes/135.md
  • Internal preview: https://review.learn.microsoft.com/microsoft-edge/web-platform/release-notes/135?branch=pr-en-us-3739
  • External preview: https://github.com/MicrosoftDocs/edge-developer/blob/web-platform-release-notes-147/microsoft-edge/web-platform/release-notes/135.md
  • Before/live: https://learn.microsoft.com/microsoft-edge/web-platform/release-notes/135
  • Removed /en-us/ from URLs.

• TOC

  • toc.yml
  • Added: Microsoft Edge 147 web platform release notes (Apr. 2026)
  • Archived: Microsoft Edge 137 web platform release notes (May 2025)

• .gitignore

  • Added test-release-notes.md.

• /scripts/beta-release-notes-template.njk

  • Changed from:
    [Origin trials in Microsoft Edge]
    [Chromium origin trials]
    to:
    [Origin trials]

• /scripts/compare-release-notes.js

  • Added: function getChromeStatusFeatureUrl(feature)
  • Added: const chromeStatusUrl = getChromeStatusFeatureUrl(feature);

• /scripts/web-platform-release-notes.js

  • Added wait: await page.goto(EDGE_OT_PAGE, { waitUntil: "networkidle" });
  • Added: if (isDryRun) {console.log('Running in dry-run mode. Release notes will be written to test-release-notes.md');
  • Added: if (isDryRun) {console.log(Dry run complete. The release notes draft has been written to ${releaseNotesPath}.);

AB#61307641

[mikehoffms]

LGTM - Writer/Editor

[learn-build-service-prod]

Learn Build status updates of commit 3609049:

✅ Validation status: passed

File	Status	Preview URL	Details
.gitignore	✅Succeeded
microsoft-edge/toc.yml	✅Succeeded	View
microsoft-edge/web-platform/release-notes/135.md	✅Succeeded	View
microsoft-edge/web-platform/release-notes/136.md	✅Succeeded	View
microsoft-edge/web-platform/release-notes/137.md	✅Succeeded	View
microsoft-edge/web-platform/release-notes/141.md	✅Succeeded	View
microsoft-edge/web-platform/release-notes/142.md	✅Succeeded	View
microsoft-edge/web-platform/release-notes/144.md	✅Succeeded	View
microsoft-edge/web-platform/release-notes/145.md	✅Succeeded	View
microsoft-edge/web-platform/release-notes/146.md	✅Succeeded	View
microsoft-edge/web-platform/release-notes/147.md	✅Succeeded	View
microsoft-edge/web-platform/site-impacting-changes.md	✅Succeeded	View
scripts/beta-release-notes-template.njk	✅Succeeded
scripts/compare-release-notes.js	✅Succeeded
scripts/web-platform-release-notes.js	✅Succeeded

For more details, please refer to the build report.