Convert a unix timestamp to UTC and your local date.
Check if the URL is cached or not by Google.
Get approximate IP details.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Separate text back and forth by new lines, commas, dots...etc.
Get all possible details about a domain name.
Minify your HTML by removing all the unnecessary characters.