Protect PDF
Add password protection to your PDF file.
Protect PDF with a Password Online
Protect your PDF documents by adding a password with our free online PDF protection tool. Password protection helps prevent unauthorized users from opening confidential files and adds an extra layer of security to sensitive documents.
Simply upload your PDF, enter a strong password, and click Protect PDF. Your document will be encrypted and can only be opened by users who know the password.
Our PDF password protection tool works entirely in your browser and is compatible with Windows, macOS, Linux, Android, and iPhone without requiring software installation.
How to Password Protect a PDF
Step 1
Upload your PDF document.
Step 2
Enter a secure password for your PDF.
Step 3
Click the Protect PDF button.
Step 4
Download your password-protected PDF file.
Features
Why Protect a PDF?
Password-protecting a PDF helps keep confidential information safe. Whether you're sharing contracts, invoices, financial statements, reports, resumes, legal documents, or personal records, adding a password ensures only authorized users can open the file.
Businesses, students, teachers, healthcare professionals, and government organizations commonly use password-protected PDFs to secure sensitive documents before sending them by email or uploading them online.
Your document's formatting, fonts, images, and layout remain unchanged while adding password protection.
Tips for Creating a Strong Password
- Use at least 8–12 characters.
- Include uppercase and lowercase letters.
- Add numbers and special characters.
- Avoid common words or personal information.
- Store your password safely because it may not be recoverable.
Privacy & Security
Your files are processed securely and automatically removed after processing. We do not permanently store your PDF documents, helping protect your personal and business information.
Frequently Asked Questions
Is this tool free?
Yes. You can password-protect PDF files online completely free.
Will my PDF content change?
No. The tool only adds password protection while preserving your document's content, formatting, and quality.
Can I share the protected PDF?
Yes. Anyone with the correct password can open the protected PDF.
Are my files secure?
Yes. Your documents are processed securely and automatically removed after processing.