This can change file names' upper case letters to lower case (incl. extensions). (solved)

[MillionaireNextDoor]

Carpal Tunnel! That's what I want to prevent

 

[eplebnista]

Here is a link to some possible solutions.

hth,
eplebnista

 

[MillionaireNextDoor]

intriguing. thanks! many possible solutions to try out

 

[MillionaireNextDoor]

Solved! Thanks, eplebnista. I used TheRenamer2.0 link

Can do much more than just rename files