Password Protect PDF Online Free
Add password protection to your PDF files instantly. Encrypt sensitive documents with a strong password to control access and ensure confidentiality. Secure and free.
Or Drag & Drop Files Here
Max file size: 100MB • Accepted: .pdf
SSL Encrypted
256-bit security
Auto-Delete
Files removed in 30 min
Private & Secure
No data tracking
Password Protect PDF Online - Secure Your Documents
Need to secure a confidential PDF? Our free online PDF password protection tool lets you add strong encryption to your documents instantly. Protect sensitive information like contracts, financial documents, medical records, or personal files with military-grade AES-256 encryption. Only people with the password can open your protected PDF.
Strong Encryption
AES-256 bit encryption - the same security standard used by banks and government agencies.
Instant Protection
Your PDF is encrypted in seconds. No software installation required - works in your browser.
Privacy First
Your password is never stored. Files are automatically deleted after 30 minutes for your security.
Works Everywhere
Protected PDFs work in all PDF readers - Adobe, browsers, mobile devices, and more.
How to Password Protect a PDF
- Upload your PDF file - Click the upload button or drag and drop your PDF document.
- Create a strong password - Enter your password and confirm it. Use at least 8 characters with a mix of letters, numbers, and symbols.
- Download protected PDF - Click "Protect PDF" and download your encrypted file.
Why Password Protect Your PDFs?
Confidential Business Documents
Protect contracts, proposals, financial reports, and proprietary information from unauthorized access.
Personal & Legal Documents
Secure tax returns, medical records, legal agreements, and personal identification documents.
Email Attachments
Add an extra layer of security when sending sensitive documents via email or file sharing.
Compliance Requirements
Meet HIPAA, GDPR, and other regulatory requirements for protecting sensitive data.
Frequently Asked Questions
What type of encryption is used?
We use AES-256 encryption, which is the industry standard for securing sensitive documents. This is the same encryption level used by banks and government agencies.
Can I recover a forgotten password?
No, passwords cannot be recovered. We never store your password for security reasons. Make sure to keep your password in a safe place.
Will the protected PDF work on all devices?
Yes! Password-protected PDFs work with all standard PDF readers including Adobe Acrobat, web browsers, and mobile PDF apps.
What's the maximum file size?
Free users can protect PDFs up to 20MB. Pro subscribers can process files up to 500MB with faster processing.
Is my data secure during the process?
Absolutely. All files are transferred using SSL encryption, processed on secure servers, and automatically deleted within 30 minutes. Your password is never stored.