PDF Protect

Online PDF Protection

Encrypt PDF files and set owner/user passwords to secure sensitive data.

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Drag & drop your PDF file here

supports PDF format only

Select PDF
Your PDF
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Protection Settings:
Features

Why Use PDF Protect?

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Password Protection

Encrypts your PDF layout headers to request credentials on opening.

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Strong Compilation

Integrates advanced client metadata hashing structures using PDFLib.

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Offline Encryption

Secures files entirely in local browser threads without server uploads.

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Preserves Layouts

Keeps text formats, margins, and graphics grids completely unaltered.

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Unlimited Free Use

Encrypt as many documents as you want completely free.

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Smartphone Ready Grid

Perfect fluid UI components adapt cleanly to mobile devices.

Frequently Asked Questions

Upload your document, define a secure password in the input field, and click Encrypt & Download.

A mix of numbers, special symbols, and capitalized letters is recommended.

No. Processing happens locally in the browser memory using JS.

Yes. Use our PDF Unlock tool with the same password to decrypt the file.

This utility protects files individually to ensure correct credential mapping.

Yes. Securing your files with passwords is 100% free.
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保持連接，保持私密。
每周更新 客戶支持 安全和私密 99.99%正常運行時間
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