I searched the web for a free command line tool to OCR PDF files: I found many, but none of them were really satisfying: Scales properly to handle files with thousands of pagesįor details: please consult the documentation.Uses Tesseract OCR engine to recognize more than 100 languages.Distributes work across all available CPU cores.If requested, deskews and/or cleans the image before performing OCR.Optimizes PDF images, often producing files smaller than the input file.When possible, inserts OCR information as a "lossless" operation without disrupting any other content.
Keeps the exact resolution of the original embedded images.Places OCR text accurately below the image to ease copy / paste.Generates a searchable PDF/A file from a regular PDF.See the release notes for details on the latest changes. Output_searchable.pdf # produces validated PDF output Input_scanned.pdf # takes PDF input (or images) output-type pdfa # it produces PDF/A by default jobs 4 # it uses multiple cores by default title "My PDF " # it can change output metadata rotate-pages # it can fix pages that are misrotated l eng+fra # it supports multiple languages Ocrmypdf # it's a scriptable command line program
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