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Get all possible details about an SSL certificate.
Get all the HTTP headers that an URL returns for a typical GET request.
Check whether or not a website is using the new HTTP/2 protocol or not.
Ping a website, server or port..
Check whether or not a website is using the Brotli Compression algorithm or not.
Get the web-host of a given website.
Get details of any file type, such as the mime type or last edit date.
Make sure your passwords are good enough.