Client side (javascript/jQuery) file manipulation before/after upload/download

Question

I\'m just sounding things out about this having looked around for a while and drawn a blank. I\'d like to see if this is even possible as so far I can\'t see a way to do it.

Answer 1

I can't speak to other browsers, but I know this should be possible in Firefox by using the file manipulation api to upload/download files from the user to the client-side code (where they may be manipulated), and standard ajax to upload/download files from the client-side code to the server.