dab 30.06.2015 included: PDFBOX - https://pdfbox.apache.org/ Tess4J - http://tess4j.sourceforge.net/ Tesseract - https://code.google.com/p/tesseract-ocr/ Ghost4J - http://www.ghost4j.org/index.html licenses: http://www.apache.org/licenses/LICENSE-2.0.html http://www.gnu.org/licenses/lgpl.html There are different modes how to use this Program: 1. OCR mode: has 4 parameters: lang (-DEU/-ENG), mode (-OCR/-READ/-AUTO), infile (PDF/BMP/TIF/PNG) and outfile (TXT) -OCR : using tesseract for character recognition -READ : using pdfbox to extract text from "text-based" PDF files -AUTO : tries to extract text with pdfbox and fallback to tesseract if it is not a text-based PDF file 2. WhiteOnWhite Overlay mode: has 5 parameters: mode (-OVERLAY), infile (PDF), outfile (PDF), text (String) and color (Color.WHITE/Color.BLACK) The overlay text is written on every page of the original document, the original is not changed