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OffscreenCanvas.constructor

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 compatibilityUpdate compatibility data on GitHub

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
Basic support 69 ? 46
Disabled
46
Disabled
Disabled From version 46: this feature is behind the gfx.offscreencanvas.enabled preference. To change preferences in Firefox, visit about:config.
 No 56 No
Mobile
Android webview Chrome for Android Edge Mobile Firefox for Android Opera for Android iOS Safari Samsung Internet
Basic support No 69 ? 46
Disabled
46
Disabled
Disabled From version 46: this feature is behind the gfx.offscreencanvas.enabled preference. To change preferences in Firefox, visit about:config.
 Yes No 4.0

See also

Edit this page on MDN

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/OffscreenCanvas/OffscreenCanvas