Viewport

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

See full compatibility

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The Viewport interface of the Viewport Segments API represents the device's viewport.

Instance properties

segments Read only: Returns an array of DOMRect objects representing the position and dimensions of each viewport segment within the overall display.

Specifications

Specification
CSS Viewport Module Level 1 # the-viewport-interface

Browser compatibility

	desktop					mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS
`Viewport` Experimental	Chrome – Full support Chrome 138 (Release date: 2025-06-24) footnote Full support	Edge – Full support Edge 138 (Release date: 2025-06-26) footnote Full support	Firefox – No support Firefox footnote No support	Opera – Full support Opera 122 (Release date: 2025-09-11) footnote Full support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 138 (Release date: 2025-06-24) footnote Full support	Firefox for Android – No support Firefox for Android footnote No support	Opera Android – Full support Opera Android 91 (Release date: 2025-08-19) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – No support Samsung Internet footnote No support	WebView Android – Full support WebView Android 138 (Release date: 2025-06-24) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support
`segments` Experimental	Chrome – Full support Chrome 138 (Release date: 2025-06-24) footnote Full support	Edge – Full support Edge 138 (Release date: 2025-06-26) footnote Full support	Firefox – No support Firefox footnote No support	Opera – Full support Opera 122 (Release date: 2025-09-11) footnote Full support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 138 (Release date: 2025-06-24) footnote Full support	Firefox for Android – No support Firefox for Android footnote No support	Opera Android – Full support Opera Android 91 (Release date: 2025-08-19) footnote Full support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – No support Samsung Internet footnote No support	WebView Android – Full support WebView Android 138 (Release date: 2025-06-24) footnote Full support	WebView on iOS – No support WebView on iOS footnote No support

Tip: you can click/tap on a cell for more information.

Full support: Full support
No support: No support
: Experimental. Expect behavior to change in the future.

Viewport

Instance properties

Specifications

Browser compatibility

Legend

See also