i dont have much expirience with the actual code but I do know how it works. basically a post request will send back a data complete as soon as its done. what you could do is send a request for progress percentage very few seconds and wait for a response back. when you get that response update it in the HTML. I'm new to this website so sorry if I'm not much of a help. if its a buffer that absorbs the file. you could also send it byte by byte and have a system autorun on the server to compile it all together in the end and make it one file. otherwise I don't know how to help. like I said I'm new so sorry if I'm no help. i just want to try if I can :(