Unlock PDF
Remove the password from a PDF you can already open, for free — entirely in your browser. Enter the password once and save an unlocked copy. Your file is never uploaded to a server.
How to unlock a PDF
- Open the tool and add your password-protected PDF.
- Enter the password when prompted — the same one you use to open the file.
- Save the unlocked copy, created on your device — free, with no watermark.
Unlocked on your device — never uploaded
Most “unlock PDF” websites upload your document and its password to their servers. LambiPdf removes the protection using your own browser, so neither the file nor the password ever leaves your computer. It's free, needs no account, and adds no watermark.
Only for PDFs you have the password to
This tool removes protection from a PDF when you know the password — for example a bank statement or payslip you can open but want to save without re-typing the password each time. It does not crack, guess or bypass passwords on files you aren't authorised to open.
Need the opposite?
To add a password instead, use the free Protect PDF tool to encrypt a PDF with a password and permissions.
More free PDF tools
Unlock PDF — FAQ
Is the Unlock PDF tool free?
Yes — completely free, with no sign-up and no watermark.
Are my files uploaded?
No. The PDF is unlocked entirely in your browser; neither the file nor the password leaves your device.
Do I need to know the password?
Yes. This removes protection from a PDF you can already open — it does not crack or bypass unknown passwords.
What do I get back?
A copy of the same PDF saved without password protection, so it opens without a prompt.
How do I add a password instead?
Use the Protect PDF tool to encrypt a PDF with a password.