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.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
OffscreenCanvas() constructor | Chrome Full support 69 | Edge Full support ≤79 | Firefox
Partial support
46
| IE No support No | Opera Full support 56 | Safari No support No | WebView Android No support No | Chrome Android Full support 69 | Firefox Android
Partial support
46
| Opera Android Full support Yes | Safari iOS No support No | Samsung Internet Android Full support 10.0 |
Legend
- Full support
- Full support
- Partial support
- Partial support
- No support
- No support
- Experimental. Expect behavior to change in the future.
- Experimental. Expect behavior to change in the future.
- See implementation notes.
- See implementation notes.
- User must explicitly enable this feature.
- User must explicitly enable this feature.
See also
OffscreenCanvas
, the interface this constructor belongs to