#AwaitedDOM/ OffscreenCanvas

#Properties

#.height

W3C

The height of the offscreen canvas.

#Type: Promise<number>

#.width

W3C

The width of the offscreen canvas.

#Type: Promise<number>

#Methods

#.convertToBlob(options?)

W3C

Creates a Blob object representing the image contained in the canvas.

#Arguments:

• options ImageEncodeOptions.

  You can specify several options when converting your OffscreenCanvas object into a Blob object, for example:

  const blob = offscreenCanvas.convertToBlob({
     type: "image/jpeg",
     quality: 0.95
   });

  options:

  • **type**: A `string` indicating the image format. The default type is image/png.
  • **quality**: A `number` between 0 and 1 indicating image quality if the type option is image/jpeg or image/webp. If this argument is anything else, the default value for image quality is used. Other arguments are ignored.

#Returns: Promise<Blob>

#.transferToImageBitmap()

W3C

Creates an ImageBitmap object from the most recently rendered image of the OffscreenCanvas.

#Returns: ImageBitmap

#Unimplemented Specs

#Methods