weird lil idea for an extension

i got this weird idea for a google extension that turns your normal texts into different kinds of texts

 l1K3 tH1s 

or LiKe ThIs

or every S turns into a Z

etc

y'all get the idea, It will help silly people who r really lazy (like me :3) it can have a hotkey for us to use it, like when you select the text you want to edit and press [inserthotkeyhere] it gives a popup with whatever style you'd like to change it to (kinda like the one on my PC's notes app)

 but I'm not a coder