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/DOM

OffscreenCanvas.width

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The width property returns and sets the width of an OffscreenCanvas object.

var pxl = offscreen.width;
offscreen.width = pxl;

Creating a new offscreen canvas and returning or setting the width of the offscreen canvas:

var offscreen = new OffscreenCanvas(256, 256);
offscreen.width; // 256
offscreen.width = 512;

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

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	69	?	44 Disabled 44 Disabled Disabled From version 44: 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	?	44 Disabled 44 Disabled Disabled From version 44: this feature is behind the `gfx.offscreencanvas.enabled` preference. To change preferences in Firefox, visit about:config.	Yes	No	No