Get all possible details about an SSL certificate.
Get all the HTTP headers that an URL returns for a typical GET request.
Check whether a website is using the new HTTP/2 protocol or not.
Make sure your passwords are good enough.
Convert normal text to old english font type.
Get details of any file type, such as the mime type or last edit date.
Convert text to decimal and the other way for any string input.
Convert text to binary and the other way for any string input.