Web platform features explorer

📃 April 2025 release notes

Newly available

The following features are newly available:

  • Atomics.pause(): The Atomics.pause() static method gives a hint to the CPU that the code calling the method is in a short-duration wait for shared memory, known as spinning or a spinlock.
  • Float16Array: Float16Array is a typed array of 16-bit floating point numbers.
  • Single color stop gradients: A single color stop can be provided to the linear-gradient(), radial-gradient(), and conic-gradient() CSS functions, and their repeating counterparts, to create a solid color background.

Widely available

The following features are now widely available:

  • ic unit: The ic CSS length unit corresponds to the width of CJK ideographic characters.

New in Chrome

The following features are now available in Chrome:

  • fetchLater: The fetchLater() method requests a deferred fetch sent at an unknown time. The browser chooses a reliable time to send the request, ideally when the document is unloaded, and ignores the response. This API is useful for sending beacons to a server without expecting a particular response.
  • Invoker commands: The command and commandfor attributes for the <button> HTML element dispatch an action to an element when the button is invoked (by click or keystroke), as a declarative alternative to addEventListener() calls or onclick attribute handlers.
  • Scroll markers: A scroll container can be navigated by activating ::scroll-marker pseudo-elements which appear in a generated ::scroll-marker-group pseudo-element, either before or after the scroll container.

New in Chrome Android

The following features are now available in Chrome Android:

  • fetchLater: The fetchLater() method requests a deferred fetch sent at an unknown time. The browser chooses a reliable time to send the request, ideally when the document is unloaded, and ignores the response. This API is useful for sending beacons to a server without expecting a particular response.
  • Invoker commands: The command and commandfor attributes for the <button> HTML element dispatch an action to an element when the button is invoked (by click or keystroke), as a declarative alternative to addEventListener() calls or onclick attribute handlers.

New in Edge

The following features are now available in Edge:

  • fetchLater: The fetchLater() method requests a deferred fetch sent at an unknown time. The browser chooses a reliable time to send the request, ideally when the document is unloaded, and ignores the response. This API is useful for sending beacons to a server without expecting a particular response.
  • Invoker commands: The command and commandfor attributes for the <button> HTML element dispatch an action to an element when the button is invoked (by click or keystroke), as a declarative alternative to addEventListener() calls or onclick attribute handlers.
  • Scroll markers: A scroll container can be navigated by activating ::scroll-marker pseudo-elements which appear in a generated ::scroll-marker-group pseudo-element, either before or after the scroll container.

New in Firefox

The following features are now available in Firefox:

  • Hyphenate limit chars: The hyphenate-limit-chars CSS property sets the number of characters in a word before it is hyphenated and the minimum number of characters on either side of the hyphen.

New in Firefox for Android

The following features are now available in Firefox for Android:

  • Hyphenate limit chars: The hyphenate-limit-chars CSS property sets the number of characters in a word before it is hyphenated and the minimum number of characters on either side of the hyphen.