+1
Character counter
with output for Characters used and characters remaining (remaining being field size less chars used). Hopefully a simple control that someone can knock up pretty quickly
Customer support service by UserEcho
I would love to give it a try for textbox type fields
please check out the below
PCF.Study/Charecter Counter at master · astav2/PCF.Study (github.com)
Character Counter | PCF Gallery - released new control for it. hope this helps