Lock PDF

    Add a password to a PDF using the existing lock tool. Download the protected document and check it opens with your chosen password.

    Drop your PDF here to lock it

    or click to browse files

    Lock PDF

    You can add 10 more files

    PDF

    Maximum file size: 25MB

    How to use Lock PDF

    1. 1

      Upload the PDF you want to protect.

    2. 2

      Enter a password and run the lock tool.

    3. 3

      Download the protected PDF and test the password.

    Why use this tool

    Use a password when you want a PDF reader to request one before opening the document. Keep the password somewhere you can retrieve it.

    Frequently asked questions

    Should I save the password?
    Keep a copy of the password separately from the document so you can open it later.
    Does a password guarantee nobody can copy the document?
    Do not treat password protection as a guarantee against every form of copying or disclosure.
    Can I remove a password later?
    Use Unlock PDF with the required password and verify the downloaded result.
    Where does Lock PDF process my file?
    Lock PDF uploads the input to the server for processing. Conversion results are stored for re-download until deleted; the memory cleanup timer does not delete stored results. See the Privacy Policy for current retention details.

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