Free during beta

Password Protect PDF Online — Free & Secure

Add password encryption to your PDFs with granular permissions. Protect sensitive documents from unauthorized access — all processing happens locally in your browser.

⚡ Instant — Encrypt PDFs in seconds
🔒 Private — No uploads, local encryption
🆓 Free — Unlimited protection during beta
Open Tool →

Why Choose Our PDF Password Protector?

Maximum Security

Your unprotected PDF never leaves your device. Cloud-based tools require uploading your sensitive document to remote servers — a major security risk. LocalPDF encrypts locally.

Granular Permissions

Set user and owner passwords separately. Control printing, copying, editing, and annotation permissions with industry-standard PDF encryption.

AES-256 Encryption

Uses the same encryption standard as military and banking applications. Your protected PDF is secure against brute-force attacks.

No Password Storage

We never see or store your password. Only you know the encryption key, ensuring complete confidentiality.

Works Offline

Once loaded, protect PDFs without internet. Perfect for confidential documents that shouldn't be transmitted over networks.

Instant Encryption

No upload time, no processing queues. Encryption happens in your browser at native speed — usually under 2 seconds.

Key Features

How It Works

  1. Click "Open Tool" button above
  2. Upload the PDF you want to protect
  3. Enter a strong password
  4. Configure permissions (optional)
  5. Download your encrypted PDF instantly
100% Private: Your files never leave your device. All processing happens locally in your browser.