js-imagediff JavaScript / Canvas based imagediff utility. API createCanvas() create a new Canvas element. createImageData(width, height) create a new ImageData object. isImage(object) tests for Image object. isCanvas(object) tests for Canvas object. isContext(object) tests for CanvasRenderingContext2D object. isImageData(object) tests for ImageData object. isImageType(object) tests for any of the