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I am looking for a gratis, off-line program on Microsoft Windows to batch unlock PDF files to make them OCRable in Acrobat.


I unsuccessfully tried https://sourceforge.net/projects/portablepdfunlocker/: it doesn't work on my PDF files, it displays "working x of y file" forever:

Screenshot of Portable PDF Unlocker not working

(I tried with Windows 7 SP1 x64 Ultimate)

To remove the security on just 1 PDF one can use Chrome -> save as PDF. But I couldn't find a way to batch process with Chrome: How can I save many PDF files as PDF files via Google Chrome? (unless using some ad hoc AHK/Sikuli/etc. scripts)

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You can use PDFCreator:

  • gratis
  • offline
  • works on Windows 10, Windows 8, Windows 7 SP1

To batch unlock PDF files to make them OCRable in Acrobat, batch print them via PDFCreator. To batch print in PDFCreator, see https://www.pdfforge.org/tips/auto-save

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Tested with PDFCreator 4.1.2 on Windows 7 SP1 x64 Ultimate.

Note that by default PDFCreator comes with PDF Architect. If you don't want it, you can unselect during the installation process:

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