Generate passwords with custom length and custom settings.
Validate JSON content and make it looks good.
Get approximate IP details.
Get details of any file type, such as the mime type or last edit date.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Get all possible details about an SSL certificate.
Check whether or not a website is using the new HTTP/2 protocol or not.