Is my file uploaded to a server?

No. This tool runs entirely in your browser via WebAssembly — your file never leaves your device. You can verify this in your browser's DevTools Network tab.

How strong is the encryption?

The PDF is encrypted with AES, applied entirely in your browser.

Do you store my password?

No. The password never leaves your device — we couldn't store it if we wanted to.

Password Protect

Encrypt your PDF with a password. It is applied entirely in your browser.

Local processing — your files never leave your browser