Scanning images with OCR (Optical Character Recognition) is immensely helpful to find what you're looking for later solely by using the text in the image when searching. OCR is big money, so of course, there's no easy way to do it with a nice UI. Many of these apps cost $10, $20, or more, which is unreasonable.
Tesseract is a free, open-source OCR application that many of the paid apps "borrow", repackage, and sell at a high mark up. Unfortunately, when I say application, I mean a command line interface. So, it's not terribly intuitive. But we can simplify it.