Minify your HTML by removing all the unnecessary characters.
Minify your JS by removing all the unnecessary characters.
Encode any string input to Base64.
Convert text to ascii and the other way for any string input.
Generate a bcrypt password hash for any string input.
Take an IP and try to look for the domain/host associated with it.
Get approximate IP details.
Easily convert bits (bit) to gigabytes (GB).