📄️ Passwordless API
YOURLS allows API calls the old fashioned way, using username and password parameters (if your setup is private, obviously).
YOURLS features proxy support, meaning that you can install it behind a firewall or a proxy, and hopefully use it without any limitation.
📄️ Public shortening
Tips and must-do things if you run a public shortening interface.
📄️ Custom protocols
YOURLS can shorten URLs with non standard protocols (other than http or https).