Protect a PDF with a password
Encrypt confidential documents such as contracts, payslips or medical reports before you send them. The file is encrypted with AES-256, the strongest standard PDF encryption, and can only be opened with your password.
Drop a file here
or click to choose · PDF
Your files are processed on your device and never uploaded.
How to use this tool
- 1
Add a PDF file.
- 2
Enter a password (at least 4 characters) and keep it safe.
- 3
Start and download the protected PDF.
Supported formats
- Accepted
- Output
Limits
- Max. 50 MB per file
- Up to 300 pages per PDF
- Your files are processed on your device and never uploaded.
Frequently asked questions
What happens if I forget the password?
We cannot recover it: the password is not stored anywhere, and there is no way back without it. Keep a copy of the original file.
Is my password stored?
No. The password is used only in your browser to encrypt this file. It is never sent anywhere or stored.
Which programs can open the protected PDF?
All current PDF readers, including Adobe Acrobat, browser PDF viewers, Preview on Mac and mobile apps, support AES-256 encrypted PDFs.
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