Is it possible to know the size in bytes of an image created with convas?

Question

JavaScript

Hello! Is there any way to find out the size of an image in bytes created with canvas?
For example: I created a smiley, you need to determine the size of this smiley in bytes.

Answer 1

The image is drawn in the canvas as is, in bitmap, without compression (Png / jpg and others). Therefore, feel free to use the formula
width*height*4
where 4 is RGBA
Well, or you can get from toDataURL("image/png") and find out the size there

Answer 2

The size of this emoji in bytes will depend on what format you save it in.