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Is there a way to save to the local filesystem a canvas with loaded images from external websites into it?
If I try with toDataUrl(), it just trhows a Security error. In Firefox I can just save to a file the canvas with the right click, but this is not possible in Chrome.
No, for security reasons you can’t use
toDataUrl().For why this is happening you need to look into cors.
Here’s a bit on why it should be this way.
It’s a feature in Firefox that you can right-click save-as because its all local. If it were with
toDataUrl()then the webpage could also attempt to send the canvas data to the server and we don’t want that.The right-click save-as is a requested feature in Opera and may come to other browsers someday but I wouldn’t bank on the functionality existing any time soon.