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.It is already being used to scan and search millions of heavy PDF files. OCRmyPDF is a free open-source command-line tool that adds an OCR text layer to scanned PDF files, allowing them to be searched or copy-pasted. Note that most of these tools require a fair amount of knowledge on how to run command-line applications. These alternatives can save you the cost of commercial PDF programs while still offering high-quality OCR capabilities. In this post, we present the best free and open-source PDF OCR solutions.

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