XRSubImage: viewport property

Limited availability

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

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

The read-only viewport property of the XRSubImage interface represents the XRViewport that is used when rendering the sub image.

Value

Specification
WebXR Layers API Level 1 # dom-xrsubimage-viewport

	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 147 (Release date: 2026-04-07) footnote Full support	Edge – Full support Edge 147 (Release date: 2026-04-10) footnote Full support	Firefox – No support Firefox footnote No support	Opera – Full support Opera 131 (Release date: 2026-04-29) footnote Full support	Safari – No support Safari footnote No support	Chrome Android – Full support Chrome Android 147 (Release date: 2026-04-07) footnote Full support	Firefox for Android – No support Firefox for Android footnote No support	Opera Android – No support Opera Android footnote No support	Safari on iOS – No support Safari on iOS footnote No support	Samsung Internet – No support Samsung Internet footnote No support	WebView Android – No support WebView Android footnote No support	WebView on iOS – No support WebView on iOS footnote No support

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