Cant upload world

I cant upload my world , when I press upload it keeps loading and then it tells me webpage unavailable , Iam using chrome .
Please help !

yes its a .zip file and its bigger than 50mb ( around 55mb ) and yes javascript is allowed .

is there is anyway I can get through this ? like sending the file in .7z or .rar file ? and is there is a way to make the file size smaller ? please help me !

Do i have to add the world folder itself to a .zip file or its content ? and is chrome bad for uploading ? because it still gives me webpage unavailable ( when I upload a .zip file less than 50mb , and the world folder itself is in that zip file ) help please .

please help me , me and my friend made a server before on tunngle but then we found this great site ( we had a bad lag problems with tunngle ) my world now is .zip file and its only 17mb but the same problem , I uploaded bigger files on different sites before, I think there is something with the upload system ..... PLEASE HELP ME !

good because thats what I did but still , same problem , there should be a status bar showing the uploaded part and percentage and remaining time and the speed ....etc , but what to do for now ? I cant use a new world , I have been playing for about a month with my friends in this world and I cant destroy the progress (we deleted alot of worlds before to get to be able to play tegother) so please is there is a way I can even send you the world and you tell an admin to upload it to me ? anyway please ?