OffscreenCanvas()

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 height of the offscreen canvas.
height
The width of the offscreen canvas.

Examples

Creating a new offscreen canvas and initializing a WebGL context on it:

var offscreen = new OffscreenCanvas(256, 256);
var gl = offscreen.getContext("webgl");

Specifications

Specification Status Comment
HTML Living Standard
The definition of 'OffscreenCanvas()' in that specification.
Living Standard  

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic support
Experimental
Chrome No support NoEdge ? Firefox Full support 46
Disabled
Full support 46
Disabled
Disabled From version 46: this feature is behind the gfx.offscreencanvas.enabled preference. To change preferences in Firefox, visit about:config.
IE No support NoOpera No support NoSafari No support NoWebView Android No support NoChrome Android Full support 42Edge Mobile ? Firefox Android Full support 46
Disabled
Full support 46
Disabled
Disabled From version 46: this feature is behind the gfx.offscreencanvas.enabled preference. To change preferences in Firefox, visit about:config.
Opera Android No support NoSafari iOS No support NoSamsung 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

Document Tags and Contributors

Contributors to this page: sideshowbarker, fscholz, adria
Last updated by: sideshowbarker,