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How to Encrypt and Password-Protect a PDF Document Using LibreOffice

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Mike Wills
Aug 05, 2025
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If you sell eBooks from your own website or other platforms, it’s a good idea to password-protect and encrypt files which are to be downloaded. PDFs are a good format for this purpose.

In this article, I will be describing how to do this with LibreOffice.

LibreOffice is a private, free and open source office suite — the successor to the OpenOffice project.

It has its own formats, but it is also compatible with Microsoft Office 365 files (.doc, .docx, .xls, .xlsx, .ppt, .pptx). A not-for-profit organisation backs it.

If you don’t already have a copy of LibreOffice, you can download one from: https://www.libreoffice.org/download/download-libreoffice/

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