How do I save Canvas image to server?

My events are:

On start of layout > Set sprite to Canvas, Canvas paste object

On button pressed > Canvas save image

Canvas on saved image > Invoke download of Canvas.SavedImageURL

The image saves great exactly what I need except rather than download the image, I want to save it to my server. Every time I send the Canvas.SavedImageURL, the php cannot read or wrong format and is not an image that the server can save.

Do I have to add an extra step before being able to use the Canvas.SavedImageURL data?

Use AJAX to load it in to a Binary Data object. (See the 'Taking screenshots' example for how to do this.) Then you can use AJAX again to post the Binary Data to a server.