Convert your HEX color format to HEXA format.
Convert your HEX color format to RGB format.
Convert your HEX color format to RGBA format.
Convert your HEX color format to HSV format.
Convert your HEX color format to HSL format.
Convert a number to written, spelled out words.
Get all the HTTP headers that an URL returns for a typical GET request.
Check if the URL is cached or not by Google.
Get details of any file type, such as the mime type or last edit date.
Get the gravatar.com globally recognized avatar for any email.
Make sure your passwords are good enough.