Minify your CSS by removing all the unnecessary characters.
Minify your JS by removing all the unnecessary characters.
Make sure your passwords are good enough.
Generate deep link mailto with subject, body, cc, bcc & get the HTML code as well.
Validate JSON content and make it looks good.
Easily generate dummy text with the Lorem Ipsum generator.
Upload a QR code image and extract the data out of it.
Easily convert IDN to Punnycode and back.