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.
Get the gravatar.com globally recognized avatar for any email.
Check if the URL is cached or not by Google.
Take an IP and try to look for the domain/host associated with it.
Get all possible details about an SSL certificate.
Get & verify the meta tags of any website.
Make sure your passwords are good enough.