Welcome to NexifyTool — your free, privacy-first online utility hub!

Protect PDF

Add password protection to your PDFs using industry-standard AES-256 encryption. Set an open password to restrict who can read the document and a permissions password to prevent printing, copying, or editing — all without uploading your file.

AES-256 encryptionOpen passwordPermissions passwordRestrict printingRestrict copyingRestrict editingNo server uploadFree and unlimited

100% Privacy

Files stay strictly on your device. Zero server uploads.

Instant Speed

Local browser WebAssembly & JS processing engine.

Free Forever

Unlimited usage with no hidden fees or watermarks.

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How to Protect a PDF with Password

1

Upload PDF

Upload the PDF you want to protect.

2

Set Password

Enter an open password and optionally a permissions password.

3

Choose Restrictions

Select which operations to restrict.

4

Download

Download your password-protected PDF.

## Call to Action Start using Protect PDF now – it’s completely free and works instantly in your browser.

Frequently Asked Questions

AES-256 encryption, the industry standard for document security.

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