Protect PDF with Password Online Free
Add password protection to secure your PDF documents. AdobeWork provides a fast, secure, and free way to protect pdf online. No registration required, no watermarks added.
How to Protect PDF
- Upload your PDF file using drag-and-drop or click to browse
- Wait for the file to be processed (usually takes just seconds)
- Download your converted PDF file
About PDF Protection
PDF protection adds password encryption to your documents, preventing unauthorized access. AdobeWork processes files directly in your browser for maximum security.
Your password is never sent to any server - all encryption happens locally.
How to Protect PDFs
- Upload - Select your PDF file.
- Set Password - Enter and confirm your password.
- Protect - Click Protect to encrypt the PDF.
- Download - Download your protected PDF.
Why Use AdobeWork for Protect PDF?
- ✓100% Free - No hidden costs or premium features required
- ✓Fast Processing - Client-side processing for instant results
- ✓Secure & Private - Files are automatically deleted within 1 hour
- ✓No Registration - Start converting immediately without signing up
- ✓No Watermarks - Your converted files are clean and professional
Supported File Formats
- Input Formats
- Output Format
- Max File Size
- 100 MB
- Max Files
- 1 file
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Frequently Asked Questions
How do I password protect a PDF?
Upload your PDF, enter your desired password, and click Protect. Download your secured PDF.
What encryption is used?
AdobeWork uses AES-256 encryption to secure your PDF documents.
Can I set different permissions?
Yes, you can restrict printing, copying, and editing while allowing viewing.
What if I forget the password?
Passwords cannot be recovered. Make sure to save your password in a secure location.