RC4 128-bit open password, widely supported.

Cannot recover here. Keep a backup or store password safely.

Decrypt first with known password using our decrypt tool.

This tool sets open password only.

Yes; large files may need Wi-Fi.

Encrypt PDF

Set an open password on PDF locally with RC4 128-bit encryption.

PDF parsing and export is done locally in your browser; files are not uploaded to any server.

Select or drop PDF

How to use & FAQ

Protect contracts and scans before sharing. Encryption runs in-browser with pdf-lib; files are not uploaded.

You must remember the password—there is no recovery. Encrypted PDFs open in standard readers with your password.

Is PDF uploaded?: No. Encryption is fully local.
Encryption type?: RC4 128-bit open password, widely supported.
Forgot password?: Cannot recover here. Keep a backup or store password safely.
Edit after encrypt?: Decrypt first with known password using our decrypt tool.
Restrict print/copy?: This tool sets open password only.
Mobile?: Yes; large files may need Wi-Fi.