Convert your RGB color format to HEX format.
Convert your RGB color format to HEXA format.
Convert your RGB color format to RGBA format.
Convert your RGB color format to HSV format.
Convert your RGB color format to HSL format.
Easily convert IDN to Punnycode and back.
Extract email addresses from any kind of text content.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Take an IP and try to look for the domain/host associated with it.
Make sure your passwords are good enough.
Get all possible details about an SSL certificate.