Convert text to binary and the other way for any string input.
Convert text to hexadecimal and the other way for any string input.
Convert text to decimal and the other way for any string input.
Convert text to octal and the other way for any string input.
Get all the HTTP headers that an URL returns for a typical GET request.
Easily convert nibbles to zebibytes (ZiB).
Easily convert days to minutes.
Validate JSON content and make it looks good.
Convert normal text to old english font type.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.