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..
Convert roman numerals to a number with ease.
Convert text to hexadecimal and the other way for any string input.
Encode or decode HTML entities for any given input.
Convert fahrenheit degrees to celsius degrees with ease.
Upload a QR code image and extract the data out of it.