Minify your HTML by removing all the unnecessary characters.
Minify your CSS by removing all the unnecessary characters.
Make sure your passwords are good enough.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Easily remove duplicate lines from a text.
Get the gravatar.com globally recognized avatar for any email.
Get all possible details about an SSL certificate.
Get approximate IP details.