Linux

Run apt-get install ocrmypdf
Install ghostscript > 9.55 by following these instructions or running scripts/install/ghostscript_install.sh.
Run pip install ocrmypdf
Install any tesseract language packages that you want (example apt-get install tesseract-ocr-eng)
Set the tesseract data folder path
- Find the tesseract data folder tessdata with find / -name tessdata. Make sure to use the one corresponding to the latest tesseract version if you have multiple.
- Create a local.env file in the root marker folder with TESSDATA_PREFIX=/path/to/tessdata inside it

Mac

Only needed if using ocrmypdf as the ocr backend.

Run brew install ocrmypdf
Run brew install tesseract-lang to add language support
Run pip install ocrmypdf
Set the tesseract data folder path
- Find the tesseract data folder tessdata with brew list tesseract
- Create a local.env file in the root marker folder with TESSDATA_PREFIX=/path/to/tessdata inside it

Install ocrmypdf and ghostscript by following these instructions
Run pip install ocrmypdf
Install any tesseract language packages you want
Set the tesseract data folder path
- Find the tesseract data folder tessdata with brew list tesseract
- Create a local.env file in the root marker folder with TESSDATA_PREFIX=/path/to/tessdata inside it