ocrmypdf

add an OCR text layer to PDF files

Description

OCRmyPDF generates a searchable PDF/A file from a regular PDF containing only images, allowing it to be searched.

It uses the Tesseract OCR engine and so supports all the languages that Tesseract does.

Some other main features:

  * Places OCR text accurately below the image to ease copy / paste
  * Keeps the exact resolution of the original embedded images
  * When possible, inserts OCR information as a lossless operation
    without rendering vector information
  * Keeps file size about the same
  * If requested deskews and/or cleans the image before performing OCR
  * Validates input and output files
  * Provides debug mode to enable easy verification of the OCR results
  * Processes pages in parallel when more than one CPU core is
    available
  * Battle-tested on thousands of PDFs, a test suite and continuous
    integration.

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Homepage

https://github.com/jbarlow83/OCRmyPDF


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