Protect PDF Online — Free & Instant

Password protect PDF files online for free. AES-256 encryption. Secure your sensitive documents instantly.

🔒Protect PDF — Free, No Signup

How to protect pdf in 4 steps

  1. Upload your file using the upload area
  2. Configure any options if required
  3. Click the process button to start
  4. Download your result when processing is complete

Why protect pdf your PDF?

This tool helps you work with PDF files quickly and efficiently, directly in your browser without installing any software.

Tips for best results

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Frequently asked questions

Is Protect PDF free to use?+

Yes. Protect PDF is free for files up to 25MB with up to 3 tasks per day. Upgrade to Pro for unlimited use.

Do I need to create an account?+

No account is needed for free tasks. Sign up to unlock more daily tasks and larger file sizes.

Is my file secure?+

All files are encrypted during transfer and automatically deleted 1 hour after processing. PDFKit never accesses your document content.

Does this work on mobile?+

Yes. PDFKit is fully optimised for iOS and Android browsers. No app download required.

🔒 HTTPS encrypted🕐 Files deleted in 60 minutes🚫 Never read by humans✅ Free, no signup required