Files processed locally in your browser
Protect PDF with Password
Encrypt a PDF with a password so only people who know it can open it.
Drop a PDF to protect
Encryption runs in your browser. Remember this password — we cannot recover it.
How to use this tool
- Drop a PDF.
- Choose a strong password.
- Download the encrypted PDF.
Share sensitive files carefully
Pair this with our password generator for a strong unique password.
Why use FreeTools?
Unlike many online utilities, FreeTools processes your files in the browser using modern Web APIs and WASM libraries. That means faster results on your machine, no waiting for uploads, and a clear privacy story: we never see your documents or photos. No account is required — open the page, drop a file, download the result.
FAQ
Can you recover my password?+
No. Encryption happens on your device and we never see the password.
Will every reader open it?+
Most modern PDF readers support password-protected PDFs.
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