Drop your files here
or click to browse — up to 10 files
🔒 Your files never leave your device — processing happens in your browser.
Options
⚠ AES-256 encryption uses our server-side engine for true cryptographic protection. The browser-only flow currently flags metadata — full encryption coming with our WASM-qpdf release.
🔒 100% browser-side · no upload
Why use Protect PDF?
Protect sensitive PDFs with strong encryption. Set permissions for printing, copying and editing.
What's inside
- AES-256 encryption
- Owner & user passwords
- Granular permissions (print, copy, edit)
- Built-in password generator
- Security strength analytics
Protect PDF — frequently asked
Quick answers about protect pdf.
Yes. PDF Password Protector is 100% free, with no watermarks or daily limits. All processing happens in your browser, so there's no upload to our servers.