Offscreen canvas
The OffscreenCanvas API provides a canvas that can be drawn to off screen, with no dependencies on the DOM, which can be used to run heavy rendering operations inside a worker context.
Status
Baseline Widely Available (since 2025-09-27)
MDN documentation
Specifications
- HTML (#the-offscreencanvas-interface), from HTML Workstream (WHATWG).
Browser support (view on caniuse.com)
- Chrome 69 Released on 2018-09-04
- Chrome Android 69 Released on 2018-09-04
- Edge 79 Released on 2020-01-15
- Firefox 105 Released on 2022-09-20
- Firefox for Android 105 Released on 2022-09-20
- Safari 16.4 Released on 2023-03-27
- Safari on iOS 16.4 Released on 2023-03-27
Usage (according to Chrome Platform Status)
~6.886% of page loads. More data at chromestatus.com.
Interop
- Included in Interop 2023
Web Platform Tests (WPT)
View the latest WPT test results for this featureView as JSON | Edit this feature | Report an issue | Web-features entry: source, dist