pdfocr adds an OCR text layer to scanned PDF files, allowing them to be searched. It currently depends on Ruby 1.8.7 or above, and uses ocropus, cuneiform, or tesseract for performing OCR. To use, run: pdfocr -i input.pdf -o output.pdf For more details, see the manpage. pdfocr was written by Geza Kovacs The original pdfocr is hosted at http://github.com/gkovacs/pdfocr Christian Pietsch added tesseract support for this fork of pdfocr.