Check if the URL is cached or not by Google.
Get all the HTTP headers that an URL returns for a typical GET request.
Make sure your passwords are good enough.
Get details of any file type, such as the mime type or last edit date.
Check for 301 & 302 redirects of a specific URL. It will check for up to 10 redirects.
Easily convert bytes (B) to yottabytes (YB).