Choosing a proper file extension for a paste name allows to influence syntax highlighting (e.g. use 'test.py' to use syntax highlighting for Python snippets).

Pastes will be deleted after 10 days automatically unless they are smaller than 1 MB.

Longer shortcuts will be harder to guess. So with this option it will be harder to find this upload by guessing URLs.

The content of pastes will be encrypted in on the client side. The key will only be available in the URL and will never be sent to the server. Make sure to copy the link with the key or else the content will not be accessible in clear!