It’s actually compressed. It uses https://github.com/nodeca/pako https://github.com/nodeca/pako and then applies base64. Try entering hundreds of "a" and you’ll

It’s actually compressed. It uses https://github.com/nodeca/pako https://github.com/nodeca/pako and then applies base64. Try entering hundreds of "a" and you’ll see that the base64 doesn’t really get much longer.