Take an IP and try to look for the domain/host associated with it.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Get all possible details about an SSL certificate.
Get details of any file type, such as the mime type or last edit date.
Parse details from user agent strings.
Validate JSON content and make it looks good.
Easily convert PNG image files to ICO.
Check if the URL is banned and marked as safe/unsafe by Google.
Easily convert JPG image files to PNG.