Easily convert days to seconds.
Easily convert days to minutes.
Easily convert days to hours.
Easily convert days to weeks.
Easily convert days to years.
Make sure your passwords are good enough.
Get details of any file type, such as the mime type or last edit date.
Get the web-host of a given website.
Get the gravatar.com globally recognized avatar for any email.
Check if the URL is banned and marked as safe/unsafe by Google.
Get & verify the meta tags of any website.