This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The OffscreenCanvas() constructor returns a newly instantiated OffscreenCanvas object.
Syntax
new OffscreenCanvas(width, height);
Parameters
width- The width of the offscreen canvas.
height- The height of the offscreen canvas.
Examples
This example creates a new offscreen canvas using the OffscreenCanvas() constructor. We then initialize a WebGL context on it using the getContext() method.
let offscreen = new OffscreenCanvas(256, 256);
let gl = offscreen.getContext('webgl');
Specifications
| Specification | Status | Comment |
|---|---|---|
| HTML Living Standard The definition of 'OffscreenCanvas()' in that specification. |
Living Standard |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
| Desktop | Mobile | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basic support | Chrome Full support 69 | Edge ? | Firefox
Full support
46
| IE No support No | Opera Full support 56 | Safari No support No | WebView Android No support No | Chrome Android Full support 69 | Edge Mobile ? | Firefox Android
Full support
46
| Opera Android Full support Yes | Safari iOS No support No | Samsung Internet Android Full support 4.0 |
Legend
- Full support
- Full support
- No support
- No support
- Compatibility unknown
- Compatibility unknown
- Experimental. Expect behavior to change in the future.
- Experimental. Expect behavior to change in the future.
- User must explicitly enable this feature.
- User must explicitly enable this feature.
See also
OffscreenCanvas, the interface this constructor belongs to