OffscreenCanvas.convertToBlob()
Experimental
This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The OffscreenCanvas.convertToBlob()
method creates a
Blob
object representing the image contained in the canvas.
Syntax
Promise<Blob> OffscreenCanvas.convertToBlob(options);
Parameters
options
Optional-
You can specify several options when converting your
OffscreenCanvas
object into aBlob
object, for example:const blob = offscreenCanvas.convertToBlob({ type: "image/jpeg", quality: 0.95 });
options:
Return value
Examples
var offscreen = new OffscreenCanvas(256, 256);
var gl = offscreen.getContext("webgl");
// ... some drawing using the gl context ...
offscreen.convertToBlob().then(function(blob) {
console.log(blob);
});
// Blob { size: 334, type: "image/png" }
Specifications
Currently drafted as a proposal: OffscreenCanvas.
Browser compatibility
BCD tables only load in the browser
See also
- The interface defining this method,
OffscreenCanvas
.