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PDF Security Tools - Protect & Secure Your PDFs Free

Protect and secure your PDF documents with Zoom PDF Tools's comprehensive security tools. Encrypt with passwords, add digital signatures, manage permissions, remove sensitive data, and more. All security operations happen locally in your browser for maximum privacy. No cloud uploads, no data retention - your documents stay completely confidential.

All PDF Security Tools

Encrypt PDF

Add password

Decrypt PDF

Remove password

Sign PDF

Digital signature

Remove Restrictions

Unlock editing

Change Permissions

Set permissions

Sanitize PDF

Remove metadata

Flatten PDF

Merge layers

Linearize PDF

Optimize for web

Remove Metadata

Clean properties

PDF Layers

Manage layers

Why Use Zoom PDF Tools PDF Security Tools?

100% Privacy-First

All operations happen in your browser. Your files never leave your device, never uploaded to servers. Complete privacy guaranteed.

Unlimited & Free

Use all tools as many times as you want, with files of any size. No file limits, no tool limits. Completely free forever.

Lightning Fast

Browser-based processing means instant results. No waiting for uploads or downloads. Works offline after page load.

No Signup Required

Start using tools immediately. No account creation, no email, no personal information needed. Just open and use.

Frequently Asked Questions

Are these pdf security tools really free?

Yes! All Zoom PDF Tools pdf security tools are 100% free with no hidden fees, no premium tiers, and no subscription required. Use unlimited tools, unlimited times.

Are my files private and secure?

Absolutely! All processing happens entirely in your browser. Your files never leave your device, are never uploaded to servers. Complete privacy guaranteed.

Is there a file size limit?

No file size limits! Process files of any size. Browser-based processing means no artificial limitations.

Do I need to install software?

No installation required! All tools are web-based and work directly in your browser. Just open the page and start using - works on any device.