📃 May 2025 release notes

Newly available

The following features are newly available:

print-color-adjust: The print-color-adjust CSS property sets whether styles of printed pages should be adjusted to use less ink, in cases such as light text on a dark background.
RegExp.escape(): The RegExp.escape() static method takes a string and replaces any characters that are potentially special characters of a regular expression with equivalent escape sequences. For example, RegExp.escape("[abc]") returns "\\[abc\\]".
dialog.requestClose(): The requestClose() method of a <dialog> HTML element closes the dialog, firing a cancel event first, which listeners can use to prevent the dialog from closing. This differs from the close() method, which only fires the non-cancelable close event.

The following features are now widely available:

font-palette: The font-palette CSS property selects a color palette from the font, optionally overriding individual colors in the @font-palette-values at-rule.

The following features are now available in Chrome:

Selection composed ranges: The window.getSelection().getComposedRanges() method returns ranges that represent the current user selection, even if the selection spans across shadow tree boundaries.
reading-flow: The reading-flow CSS property sets the order in which flex or grid elements are rendered to speech or reached via focus navigation.

The following features are now available in Chrome Android:

Selection composed ranges: The window.getSelection().getComposedRanges() method returns ranges that represent the current user selection, even if the selection spans across shadow tree boundaries.
reading-flow: The reading-flow CSS property sets the order in which flex or grid elements are rendered to speech or reached via focus navigation.

The following features are now available in Edge:

Selection composed ranges: The window.getSelection().getComposedRanges() method returns ranges that represent the current user selection, even if the selection spans across shadow tree boundaries.
reading-flow: The reading-flow CSS property sets the order in which flex or grid elements are rendered to speech or reached via focus navigation.

The following features are now available in Firefox:

hidden="until-found": 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.
Temporal: The Temporal API allows you to work with dates, times, time zones, and durations. It is more powerful than the Date API.

The following features are now available in Firefox for Android:

hidden="until-found": 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.
Temporal: The Temporal API allows you to work with dates, times, time zones, and durations. It is more powerful than the Date API.