• Filters:
• Newly available
• Widely available
• Limited availability
• One missing engine
• Discouraged
• Opposed
• All features

• Features only in:
• Chromium
• Firefox
• Safari

• Browser releases:
• Chrome 145
• Chrome Android 145
• Edge 145
• Firefox 148
• Firefox for Android 148
• Safari 26.3
• Safari on iOS 26.3

New features in Firefox 148 (released on 2026-02-24)

• hidden="until-found"

  Limited availability

  The hidden="until-found" attribute hides an element until it is found using the browser's find-in-page search or it is directly navigated to by following a URL fragment.

  Baseline availability blocked since February 2026 by Safari (1 months)

  Learn more

  • Chrome 102 Released on 2022-05-24
  • Chrome Android 102 Released on 2022-05-24
  • Edge 102 Released on 2022-05-31
  • Firefox 148 Released on 2026-02-24
  • Firefox for Android 148 Released on 2026-02-24
  • Safari ❌ Vendor position : support
  • Safari on iOS ❌ Vendor position : support

• Navigation precommit handlers

  Limited availability

  The precommitHandler callback option to NavigateEvent's intercept() method returns a promise that defers navigation until the promise resolves. You can use this to change the navigation's URL, state, and history before navigation occurs.

  Learn more

  • Chrome ❌
  • Chrome Android ❌
  • Edge ❌
  • Firefox 148 Released on 2026-02-24
  • Firefox for Android 148 Released on 2026-02-24
  • Safari ❌
  • Safari on iOS ❌

• Sanitizer API

  Limited availability

  The Document.parseHTML() static method and the setHTML() method of Element and ShadowRoot objects parse and insert HTML into the DOM in a way that can prevent cross-site scripting attacks. The Sanitizer API can customize the sanitization process.

  Learn more

  • Chrome ❌
  • Chrome Android ❌
  • Edge ❌
  • Firefox 148 Released on 2026-02-24
  • Firefox for Android 148 Released on 2026-02-24
  • Safari ❌
  • Safari on iOS ❌

• shape()

  Baseline Newly Available (since 2026-02-24)

  The shape() CSS function creates shapes with a series of commands like line, move, and curve. It can be used with clip-path and shape-outside.

  Learn more

  • Chrome 135 Released on 2025-04-01
  • Chrome Android 135 Released on 2025-04-01
  • Edge 135 Released on 2025-04-04
  • Firefox 148 Released on 2026-02-24
  • Firefox for Android 148 Released on 2026-02-24
  • Safari 18.4 Released on 2025-03-31
  • Safari on iOS 18.4 Released on 2025-03-31

• Trusted types

  Baseline Newly Available (since 2026-02-24)

  Trusted types allow you to lock down insecure parts of the DOM API and prevent client-side cross-site scripting (XSS) attacks.

  Learn more

  • Chrome 83 Released on 2020-05-19
  • Chrome Android 83 Released on 2020-05-19
  • Edge 83 Released on 2020-05-21
  • Firefox 148 Released on 2026-02-24
  • Firefox for Android 148 Released on 2026-02-24
  • Safari 26 Released on 2025-09-15
  • Safari on iOS 26 Released on 2025-09-15