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.
Validate JSON content and make it looks good.
Get details of any file type, such as the mime type or last edit date.
Get approximate IP details.
Check whether or not a website is using the new HTTP/2 protocol or not.
Make sure your passwords are good enough.
Get all possible details about an SSL certificate.