I use a £15 arm with a vice grip for my phone from Amazon, copy the files to my laptop and then run a bash for-loop of the tesseract CLI over the resultant file

I use a £15 arm with a vice grip for my phone from Amazon, copy the files to my laptop and then run a bash for-loop of the tesseract CLI over the resultant files. I use https://github.com/4lex4/scantailor-advanced https://github.com/4lex4/scantailor-advanced to deskew the images and generate the PDF. It isn't perfect but my purposes are more around research than publication, so, YMMV!