Take an IP and try to look for the domain/host associated with it.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Get approximate IP details.
Get all possible details about an SSL certificate.
Ping a website, server or port..
Validate JSON content and make it looks good.
Decode Base64 input to an image.
Convert a unix timestamp to UTC and your local date.
Transform an image input to a Base64 string.
Convert a particular date to the unix timestamp format.
Convert miles per hour (mph) to kilometers per hour (kph) with ease.