Decode Base64 input to an image.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Make sure your passwords are good enough.
Convert kilometers per hour (kph) to miles per hour (mph) with ease.
Get all possible details about an SSL certificate.
Get approximate IP details.
Take an IP and try to look for the domain/host associated with it.