This is a very simple web app for uploading files to a server.
I wanted a way to upload files (well, screenshots) from my Wii U. The services Nintendo originally provided for this have, to my knowledge, been shut down.
At first I tried simply signing in at photos.google.com and uploading there, but that didn't work for unknown reasons.
Then, I wrote a simple file upload page into my personal web app. But that app is served over SSL with a certificate from Let's Encrypt, and the Wii U Internet browser doesn't support those certificates!
So, I wrote this simple web app so I could run it without SSL (sadly).