Easily convert GIF image files to ICO.
Easily convert GIF image files to PNG.
Easily convert GIF image files to JPG.
Get all the HTTP headers that an URL returns for a typical GET request.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Get all possible details about an SSL certificate.
Ping a website, server or port..
Get approximate IP details.
Take an IP and try to look for the domain/host associated with it.