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PDF tools
Protect PDF with Password
Lock a PDF so only people with the password can open it.
Runs in your browser · files never leave your device
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What you get with the Protect PDF with Password
- Free to use: no sign-up, no watermark, no limits
- Private: runs in your browser and nothing is uploaded
- Works on phones, tablets and computers
- Instant results with one-click copy or download
How to use the Protect PDF with Password
- 1
Upload a PDF.
- 2
Type a password (and choose what is allowed).
- 3
Download the protected PDF.
Frequently asked questions
Are my files uploaded to a server?+
No. This tool runs entirely in your browser - your files never leave your device, so it is private and works even on a slow connection.
How strong is the protection?+
Files are encrypted with AES-256, the strongest standard PDF encryption, supported by all modern PDF readers.
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