Examples of text conversions

Today I stumbled upon this website with useful text conversions that I wanted to share here, as inspiration for useful text conversion macros :).

Since these tools require a paid subscription in order to prevent a 10 seconds delay, I'd say Keyboard Maestro versions are absolutely useful.

This forum does have a "Plug-in Actions" category, but I wonder if it might be helpful to have a category for (KM11+) Subroutines too ?

( Subroutines provide a conveniently re-usable way of generalising, wrapping and commenting this kind of conversion )

Are there any particular conversions in that list which you would often use, if you had them to hand as Keyboard Maestro subroutines ?