A LITTLE PASSWORD. A STRONGER BOUNDARY.

Protect PDF.

Secure PDF documents with passwords and encryption.

100% local · Your documents stay on your deviceFree · No file-size quota

Built for this task

AES-256 encryption, with real password and permission checks.

See your real document

Review actual pages and settings. Results are checked locally before downloads appear.

Private from the first page

No document uploads, no document database. Self-hosted modules load in the background while you choose files. Capacity follows browser memory and document complexity.

Sedikit langkah. Banyak yang selesai.

Cara menggunakan Protect PDF

Add real AES-256 opening-password encryption locally. Generate a password, confirm it, and optionally use a separate owner password to control compatible viewer permissions. Both QPDF and the independent PDF reader check password behavior before download.

Select a readable PDF. An encrypted source first requires authorized credentials.
Enter and confirm a strong opening password, or generate one securely. Store it somewhere safe.
Optional: open Advanced Settings for owner credentials and viewer permission flags.
Protect PDF. Real encrypted output is checked with the correct, empty, and incorrect password before download.

Pertanyaan tentang Protect PDF

How do I password protect a PDF?

Choose a PDF, enter and confirm a password, and select Protect PDF. This tool writes AES-256 encryption locally and verifies the output with two PDF engines.

Is PDF encryption secure?

AES-256 is the supported encryption method here. Choose a long, hard-to-guess password, keep it private, and use a compatible modern reader. Encryption does not protect a document after an authorized recipient opens or shares it.

Can I restrict PDF printing?

Yes. High-quality, low-quality, and no-print flags are available with a separate owner password. Viewer permissions are not absolute DRM and enforcement varies.

What happens if I forget the password?

RecodeX does not retain it and may not be able to recover it. Save a safe original and keep the password in a trusted password manager.