OffscreenCanvas()

This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for the proper prefixes to use in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the spec changes.

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

Currently drafted as a proposal: OffscreenCanvas.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support Not supported 46 (46) [1] Not supported Not supported Not supported
Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support Not supported 46.0 (46) [1] Not supported Not supported Not supported

[1] This feature is behind a feature preference setting. In about:config, set gfx.offscreencanvas.enabled to true.

See also

Document Tags and Contributors

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