Minify your CSS by removing all the unnecessary characters.
Minify your JS by removing all the unnecessary characters.
Get the gravatar.com globally recognized avatar for any email.
Convert kilograms (kg) to pounds (lb) with ease.
Check if the URL is cached or not by Google.
Check if the URL is banned and marked as safe/unsafe by Google.
Get & verify the meta tags of any website.
Make sure your passwords are good enough.