uʍop ǝpısdn ǝʇıɹʍ

uʍop ǝpısdn ǝʇıɹʍ
 

It's easy to

uʍop ǝpısdn ǝʇıɹʍ

if you use this page to generate it.

El único problema es que acentos y tildes no cambian.

.1oñɐdsǝ ɐɹɐd ɐʇuǝıɯɐɹɹǝɥ ɐʇsǝ ǝp uóısɹǝʌ ɐun ɹɐʇuǝʌuı ǝnb éɹpuǝʇ ázınb
Quizá tendré que inventar una versión de esta herramienta para español.

:) Lo encontré en reddit.

All I see are squares...

Hmmmm well, they're unicode characters, which probably means it would depend on your computer/browser having the correct fonts installed and supporting unicode. Over in the reddit comments it explains how it's done.