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I added image to canvas element, but visitor than can save that image to local comp.
Is there any way to disable that option? I don’t know, putting some transparent image over?
Thx
None of this (not even image slicing) stops a user from simply copying the screen on to the clipboard and pasting it into MSpaint or any other image utility, and saving the result. Its trivial to do; And a transparency image is no impediment to this.
The only effective options that I know of are (as was said), watermarking or low quality.
*Avoid 1 pixel wide lines or dot watermarks that can be removed easily with a Photoshop filter.
~If its commercial… You could have a pay-wall, and steganographically embed the purchaser’s name and or information into the image (or preview), such that if it does get used without permission, at least you know who did it.