a tool of saving or converting canvas to images
do not support IOS
you can just use it like this
filename is optional, default is Date.now()
Canvas2Image.saveAsImage(canvasObj, width, height, type, fileName)
Canvas2Image.saveAsPNG(canvasObj, width, height, fileName)
Canvas2Image.saveAsJPEG(canvasObj, width, height, fileName)
Canvas2Image.saveAsGIF(canvasObj, width, height, fileName)
Canvas2Image.saveAsBMP(canvasObj, width, height, fileName)
Canvas2Image.convertToImage(canvasObj, width, height, type)
Canvas2Image.convertToPNG(canvasObj, width, height)
Canvas2Image.convertToJPEG(canvasObj, width, height)
Canvas2Image.convertToGIF(canvasObj, width, height)
Canvas2Image.convertToBMP(canvasObj, width, height)
MIT