This document provides instructions on how to add additional language packs for the OCR tab in Stirling-PDF, both inside and outside of Docker.
## My OCR used to work and now doesn't!
The paths have changed for the tessadata locations on new docker images, please use ``/usr/share/tessdata`` (Others should still work for backwards compatability but might not)
The paths have changed for the tessadata locations on new docker images, please use ``/usr/share/tessdata`` (Others should still work for backwards compatibility but might not)
## How does the OCR Work
Stirling-PDF uses [OCRmyPDF](https://github.com/ocrmypdf/OCRmyPDF) which in turn uses tesseract for its text recognition.
"Authentication required. Please provide a X-API-KEY in request header.\nThis is found in Settings -> Account Settings -> API Key\nAlternativly you can disable authentication if this is unexpected");
"Authentication required. Please provide a X-API-KEY in request header.\nThis is found in Settings -> Account Settings -> API Key\nAlternatively you can disable authentication if this is unexpected");