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Tika: https://www.geeksforgeeks.org/parsing-pdfs-in-python-with-tika/
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Parsr Processing modules: https://github.com/axa-group/Parsr/blob/master/server/src/processing/README.md#1-current-processing-modules
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Tabula
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PDF Plumber: https://github.com/jsvine/pdfplumber