How to do OCR on a PDF document? [duplicate]
I found a list of free OCR software for Windows.
- FreeOCR
- Tesseract
- WeOcr Tesseract Web Interface
- GOCR
- Windows GUI for GOCR
- OCR Desktop
- Simple OCR
- TopOCR
However, these programs need an image input, not a PDF input. For this, try a PDF-to-JPG converter.
I found an interesting idea that lets Google do all the work of OCR'ing the PDF files for you.