📅 February 2026 release notes

Newly available

The following features are newly available:

Map getOrInsert(): The getOrInsert() and getOrInsertComputed() methods of Map objects get a value, setting and getting a default value if needed.
shape(): 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.
Trusted types: Trusted types allow you to lock down insecure parts of the DOM API and prevent client-side cross-site scripting (XSS) attacks.
Branch hinting (WebAssembly): Branch hints in WebAssembly allows a browser to optimize performance when a branch is a likely to take a specific path.
Zstandard compression: Zstandard or zstd is a fast lossless compression algorithm. When used as a content encoding, it is often faster and offers better compression than brotli.

The following features are now widely available:

dirname: The dirname attribute of <textarea> and <input> HTML elements includes the field's writing direction as form data on submission.

The following features are now available in Chrome:

Navigation timing confidence: The confidence property of a navigation performance entry describes whether the navigation metric is likely to be representative the page's performance (high confidence) or affected by transient conditions, such as browser startup (low confidence).
Origin: An Origin object represents an origin, as in a scheme, hostname, and port. You can use it to make same-site and same-origin comparisons.
Crash report storage: The window.crashReport object is a key-value store to record information about your application's state. If there's a crash, then the data in the key-value store is sent to your crash reporting endpoint, to help you pinpoint the cause of the crash.
text-justify: The text-justify CSS property sets the justification method of text when text-align: justify is set.

The following features are now available in Chrome Android:

Navigation timing confidence: The confidence property of a navigation performance entry describes whether the navigation metric is likely to be representative the page's performance (high confidence) or affected by transient conditions, such as browser startup (low confidence).
Origin: An Origin object represents an origin, as in a scheme, hostname, and port. You can use it to make same-site and same-origin comparisons.
Crash report storage: The window.crashReport object is a key-value store to record information about your application's state. If there's a crash, then the data in the key-value store is sent to your crash reporting endpoint, to help you pinpoint the cause of the crash.
text-justify: The text-justify CSS property sets the justification method of text when text-align: justify is set.

The following features are now available in Edge:

Navigation timing confidence: The confidence property of a navigation performance entry describes whether the navigation metric is likely to be representative the page's performance (high confidence) or affected by transient conditions, such as browser startup (low confidence).
Origin: An Origin object represents an origin, as in a scheme, hostname, and port. You can use it to make same-site and same-origin comparisons.
Crash report storage: The window.crashReport object is a key-value store to record information about your application's state. If there's a crash, then the data in the key-value store is sent to your crash reporting endpoint, to help you pinpoint the cause of the crash.
text-justify: The text-justify CSS property sets the justification method of text when text-align: justify is set.

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.
Navigation precommit handlers: 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.
overflow-clip-margin: The overflow-clip-margin CSS property sets how far overflow content may appear outside the bounds of an element before it's clipped by effects such as overflow: clip.
Sanitizer API: The Sanitizer API customizes the sanitization of HTML parsed and inserted into the DOM in a way that can prevent cross-site scripting attacks. You can use it with DOM APIs that accept a sanitizer option, such as parseHTML() or setHTML().

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.
Navigation precommit handlers: 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.
overflow-clip-margin: The overflow-clip-margin CSS property sets how far overflow content may appear outside the bounds of an element before it's clipped by effects such as overflow: clip.
Sanitizer API: The Sanitizer API customizes the sanitization of HTML parsed and inserted into the DOM in a way that can prevent cross-site scripting attacks. You can use it with DOM APIs that accept a sanitizer option, such as parseHTML() or setHTML().