Convert your HEX color format to HEXA format.
Convert your HEX color format to RGB format.
Convert your HEX color format to HSV format.
Convert your HEX color format to HSL format.
Convert your HEX color format to HSLA format.
Compress and optimize images for a smaller image size but still high quality.
Make sure your passwords are good enough.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Extract email addresses from any kind of text content.
Take an IP and try to look for the domain/host associated with it.
Get approximate IP details.