Password Protect PDF Online Free

Protect PDF Online — Password Encrypt or Anti-Copy

No downloads needed. Set an open password (AES encryption) for your PDF, or rasterize pages so content can't be selected, copied, or edited. Dual protection modes to meet different security needs. Completely free with no watermarks.

Password encryption: set an open password — unauthorized users can't view the file
Content protection: rasterize pages to images — text can't be selected, copied, or edited
Secure passwords required: minimum 8 characters with letters and numbers
One-click post-protection workflows: compress, merge, or watermark — no re-uploading needed

Beyond Encryption: Dual-Mode Comprehensive Protection

Password Encryption

Set a strong password (minimum 8 characters with letters and numbers) — users without the correct password cannot open the file. Uses AES encryption.

Rasterization Content Protection

Converts each page to a high-resolution image and repackages it as a PDF. Text becomes unselectable, uncopyable, and uneditable — effectively preventing content plagiarism or tampering.

Flexible Dual-Mode Choice

Password encryption restricts file access. Rasterization prevents content copying. Choose the best approach based on your specific protection needs.

Chain Multiple Operations

Combine with compression, merging, or format conversion in one continuous flow — no re-uploading.

Secure Cloud Processing

Data is transferred with 256-bit encryption and processed on EU servers. Files are destroyed after conversion — zero trace left behind.

No Installation Needed

Works entirely in your browser. No plugins, no downloads — just upload and go on any device.

Protect Your PDF in Just 3 Steps

Upload Your PDF

Click "Choose Files" or drag and drop your PDF into the secure workspace.

Choose Protection Mode

Select 'Password Encryption' and set a secure password, or select 'Content Protection' to rasterize pages.

Download Your Protected PDF

Processing completes in seconds — download your password-protected or content-protected PDF.

PDF Protection FAQ

What's the difference between password encryption and content protection?

Password encryption sets an open password — unauthorized users can't view the content. Content protection (rasterization) converts pages to images — text can't be selected or copied, but anyone can view the file.

What are the password requirements?

Passwords must be at least 8 characters and include at least one letter and one number for adequate security.

Will rasterization reduce document quality?

Rasterization uses high-resolution rendering — visual quality remains nearly identical to the original. However, since text becomes images, file size may increase.

What are the free plan limits?

Free users can process PDFs up to 100 MB. Upgrade to Pro for files up to 2 GB.

Is the protection process safe?

Your files are safe. All data is transferred via 256-bit encryption, processed on EU-based servers under GDPR compliance, and permanently deleted after processing.

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PDF Password Types Explained: Open Password vs. Permission Password — Security Differences & Practical Guide

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