Unlock PDF with Known Password — Free
Read a PDF with a known opening password and save a new copy without applying encryption. The tool does not guess or recover passwords, so provide the correct credential when the document requires one.
- Runs in your browser
- Nothing is uploaded
- No signup; device limits apply
This does not guess passwords. It only removes encryption you can already open.
How to use this tool
Use a PDF you are authorized to access and supply its opening password if needed. Leaving the field empty does not solve an unknown password; also check the document's distribution conditions before sharing an unlocked copy.
Results and examples
Test that the downloaded PDF opens without a password in an actual viewer and inspect its contents. Keep the original separately, since some encryption methods or document structures may not be supported by the processing library.
Worked example
Enter the known user password for a PDF you can open to save an unencrypted working copy. Reopen it in a fresh viewer window to confirm password-free access and review its intended sharing scope.
Limitations
- Unknown passwords are not guessed or recovered.
- Removing encryption does not grant distribution rights or establish signature validity.
Fields
| Field | Guidance and constraints |
|---|---|
| Known user password | This does not guess passwords. It only removes encryption you can already open. |
Data handling
Processing stays in the current browser tab; the site does not upload tool input for the calculation itself.
Sources
Frequently asked questions
Can it unlock an unknown password?
This operation needs the correct password you already know.
Is encryption removed from my original too?
It saves a new copy rather than overwriting the source.
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