Easily convert days to seconds.
Easily convert days to minutes.
Easily convert days to hours.
Easily convert days to months.
Easily convert days to years.
Extract email addresses from any kind of text content.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Get approximate IP details.
Take an IP and try to look for the domain/host associated with it.
Get & verify the meta tags of any website.
Get all the HTTP headers that an URL returns for a typical GET request.