Generate an MD2 hash for any string input.
Generate an MD4 hash for any string input.
Validate JSON content and make it looks good.
Get approximate IP details.
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 details of any file type, such as the mime type or last edit date.