Secret PDF vs SumatraPDF
A side-by-side look at Secret PDF and SumatraPDF. For an in-depth review of either product, follow the links below.
Secret PDF
Security & Privacy
Secret PDF is a free software tool for Windows, Mac and Linux that allows users to password protect, encrypt and secure their PDF files. It features standard and military grade AES encryption methods to password protect and lock PDFs, preventing unauthorized access.
pdfencryptionpasswordprotect
SumatraPDF
Office & Productivity
SumatraPDF is a free and open-source PDF, eBook, XPS, DjVu, CHM, Comic Book (CBZ and CBR) reader for Windows. It is lightweight, customizable, and supports many advanced PDF features.
pdfebookreaderlightweightopensource
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