If you want to share a PDF file with other people, but need to protect it from being viewed by unwanted eyes, LibreOffice has a built-in password-protect feature. I regularly have to send sensitive ...
iLovePDF brings different PDF tools to sign PDF documents, edit PDF, convert PDF to PDF/A, Excel, Word, reorder or rearrange PDF pages, and more. Among those tools, a Protect PDF tool is also there ...
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