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 approximate IP details.
Get all possible details about an SSL certificate.
Ping a website, server or port..
Compress and optimize images for a smaller image size but still high quality.
Use the Google translator API to generate text to speech audio.
Easily convert PNG image files to ICO.
Upload a QR code image and extract the data out of it.
Generate passwords with custom length and custom settings.
Generate a paypal payment link with ease.