Just a few observations:
1. Overall, a very helpful and effective feature. I will be able to uninstall another free program that I use, just to get PDFs converted to text quickly. Yours does it in house, so to speak. It was almost as good as MS OneNOte's OCR, which has been head and shoulders above any free OCR out there (but of course, MS charges a bit more for Office than you do, for your program

2. I've never used a free OCR program that didn't give me output of some kind, in a visible window. Now this isn't' a complaint, but some of your users might not realize that after that "processing pages, please wait" window closes, that the page is available to be copied and pasted. You might get a few queries about it not working at all. I don't know if you can have the window blink a bit, like a browser download helper app will do, when a download has finished... just a suggestion, for purposes of letting your users know that the operation has been completed. Or perhaps, enable this with an option to switch this off, if you don't want the program to let you know....
3. It seemed to have fewer problems recognizing letters of text than OneNote, but more problems inserting some random character when no character was there, in the original PDF image.
Overall, like I said, a great idea as I use OCR on PDFs often. You've succeeded at making a great product even better. At some point, you'll make me buy your pro version just because I feel so guilty using your free program all these years, but I'm not there yet.
