This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage 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 specification changes.

The ImageBitmap.close() method disposes of all graphical resources associated with an ImageBitmap.


void ImageBitmap.close()


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

// ... some drawing using the gl context ...

var bitmap = offscreen.transferToImageBitmap();
// ImageBitmap { width: 256, height: 256 }

// ImageBitmap { width: 0, height: 0 } -- disposed


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

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support 52.0 46 (46) No support 37 No support
Feature Android Android Webview Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support No support 52.0 46.0 (46) No support 37 No support 52.0

See also


© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.

API Experimental ImageBitmap Method OffscreenCanvas Reference