Secure Sensitive Documents with Password Encryption
Protect confidential contracts, tax returns, and corporate files with unbreakable 256-bit AES encryption.
Client-side Encryption•Zero Logs Policy
Encrypt PDF with Military-Grade Password Protection
Select PDF file to Protect
or drop your PDF document directly here
Free Limit: 25 MB / file•256-Bit SSL Encrypted•100% Private•Auto-purged
Lossless Precision
Vector fonts, layout formatting, bookmarks, and color spaces are preserved.
Zero Logs Privacy
Transfers are TLS-encrypted and automatically purged after operation.
Cross-Platform Fast
Lightning-fast browser execution on Windows, macOS, Linux, iOS, and Android.
Processing Speed: < 1.2s
Security: 256-Bit TLS
Processing: Client & Cloud
Compatibility: All Platforms
Designed for Reliable Protect PDF Operations
Engineered to process your documents with speed, security, and exact formatting fidelity.
256-Bit AES Password Encryption
Apply bank-grade encryption to lock sensitive files against unauthorized opening.
Granular Permission Restrictions
Disable printing, content copying, page editing, or commenting independently.
Zero Logged Passwords
GentlePDF never stores or logs your master passwords on server memory.
Universal Reader Compatibility
Encrypted PDFs open securely across all standard PDF viewers like Adobe Acrobat.
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How Protect PDF Works
A comprehensive overview of features, document handling, and technical details.
How to Use Protect PDF
Follow these simple steps to complete your document workflow.
Step 01
Upload PDF File
Drop the PDF file you want to secure.
Step 02
Set Strong Password
Enter and confirm your chosen access password.
Step 03
Encrypt File
Click Encrypt PDF to apply security algorithms.
Step 04
Download Secured PDF
Save your password-protected PDF document.
Support & Clarification
Frequently Asked Questions
Everything you need to know about processing and security with Protect PDF.
For security reasons, GentlePDF does not store passwords. Keep a backup copy of your password.
User Rating for Protect PDF
4.9 / 5.0(15,400 reviews)
Rated for formatting fidelity, conversion accuracy, and processing speed.
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