Good tool. Rated 4 out of 5 stars

A suggestions though:
I keep trying to edit the text in the Result box, so please combine the Search Text and Results text boxes into one. I.e. highlight the matching characters in the box where you enter the text to search, and remove the separate results box. Although I guess these need to be a separate result box if the "Replace by" option is used.

This review is for a previous version of the add-on (