What free software can I use to password-protect a PDF file?

venkatp16 August 29, 2012

Are there any free Windows tools to set a password for PDF files?


  1. Touhidur Rahman
    September 11, 2012 at 5:21 pm

    Try "DoroPDF" http://thesz.diecru.eu/content/doro.php to make PDFs. It gives option to set password while creating PDF files.

  2. ferdinan Sitohang
    August 31, 2012 at 9:50 am

    You can use PDF Xchange viewer.

  3. Miroslav Ivanov
    August 31, 2012 at 9:28 am

    You may want to try this http://portablesigner.sourceforge.net/

  4. jithin
    August 31, 2012 at 8:10 am

    pdfprotect.com is a nice option, give a try............

  5. April Eum
    August 30, 2012 at 10:36 pm

    i would zip/rar protect it. but i did pay for acrobat which is much easier when working with pdf's

  6. Amit Sinha
    August 30, 2012 at 10:07 am

    The best software in the market is Nitropdf which fulfills your requirement, well its cost much as $119.99 for single users.

    Nitropdf has been used by many companies and organizations.

    There are two types of password option in pdf the first one is to protect files from opening it by UN-authorized users and the second one is to protect your pdf from being edited but using this option any one can read its content of the file but does not edit it using any pdf editor.(use strong password for second option as many softwares are knocks the market which allows to edit pdf files even pass pretected pdf, use latest 15 characters long password with combination of upper and lower case, special symbols and numbers to add more security to your file)

    Nitropdf also allows you to edit pdf files and convert pdf to word, excel too.

    go here http://www.nitropdf.com/

  7. Tony Batty
    August 30, 2012 at 2:15 am

    OK, there are some online site such as the following one


    or some like this which you can download for free


    Download link http://www.weenysoft.com/pdfcutter.exe

  8. Rob Hindle
    August 29, 2012 at 10:24 pm

    Well you can password protect it but are you sure the result is what you want? If someone wants the content in a different format they can print and scan (with OCR if they want editable text) or use a screen grab.

    Those tasks become a lot harder if you add a whole page watermark or if the document is large - dozens of pages become a hassle to scan/grab.

  9. shaurya gupta
    August 29, 2012 at 5:53 pm

    It's free to use.

  10. GrrGrrr
    August 29, 2012 at 2:27 pm

    You can do it online here


    Free software-PDFill PDF Tools

  11. Vipul Jain
    August 29, 2012 at 1:56 pm

    you can always pack your pdf file in a rar and password protect it :)

  12. Bruce Epper
    August 29, 2012 at 1:28 pm

    PDF creator from PrimoPDF (appears to be related to Nitro). The last time I tried it, it allowed one to enable security on their PDF documents. This does not (or at least it didn't at the time I tried it) alter those of an existing PDF file, but you should be able to print from your PDF reader to this PDF printer to create a new document with security options enabled.

  13. Alan Wade
    August 29, 2012 at 12:36 pm

    You dont say what your prefered reader is so try this online method:


    • venkatp16
      August 29, 2012 at 12:50 pm

      I've a PDF file and wanted to secure it with a password.. is there any tool(i don't want web based utility)

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