🔐 PDF Password Protector & Unlocker
Lock client deliverables and private documents with strong AES-256 encryption — or save an unlocked copy of a PDF when you know its password.
✅ Free · No sign-up
Choose a PDF or drag it here
Processed on your device — nothing is uploaded
Processed on your device — nothing is uploaded
Use the password that opens the PDF, or the owner password for permission-only PDFs. This tool does not guess or crack passwords.
Result
How to use the PDF Password Protector & Unlocker
- Choose Protect or Unlock and open a PDF.
- Protect: enter and confirm a strong password and choose permissions. Unlock: enter the password you know.
- Download the result. Protected files are verified with qpdf before download.
Why creators use it
- Send a paid template, invoice or contract with a password shared separately.
- Remove the password from your own bank statement or document after you no longer need it.
Good to know
- Runs entirely in your browser; the file never leaves your device.
- Encryption uses AES-256 (PDF 2.0 / R6) through qpdf compiled to WebAssembly. Very old PDF readers may not open AES-256 files.
- Permission flags (printing, copying) are honoured by mainstream readers but are not strong security; only the open password truly protects content.
- Forgotten passwords cannot be recovered.
Frequently asked questions
How strong is the encryption?
AES-256 with the PDF 2.0 key derivation. A long, unique password is essential — encryption is only as strong as the password.
Can you remove a password I don’t know?
No. Unlocking requires the correct password; the tool does not attempt to crack or bypass passwords.
Is my password sent anywhere?
No. Passwords and files stay in your browser.