Linux

OCR:

apt-get install libleptonica-dev
apt-get install tesseract-ocr
apt-get install tesseract-ocr-pol
apt-get install poppler-utils

Windows

Narzędzia do obsługi pdf (pdftotext, pdftohtml,...)

http://support.edokumenty.eu/download/public_html/deployment/components/poppler-0.41.0_x86.7z