How to save just the image of the canvas and not all canvas

Question

I have a canvas 800x600 for example and I use fabricjs to add one image (200 x 200).

I apply several filters on my image and I would like to save it, but for the moment, I save the canvas 800x600 and I would like just save my picture after effects.

Is it possible?

Answer 1

From the latest version (download and compile it from GitHub), and this one is what you want:

canvas.toDataURL(left, top, width, height);

Check the question fabric.js - create Image object from ImageData object of canvas API for kangax’s comment only.