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Password Protect PDF — Encrypt Files Free

Add password protection to PDF files for free.

Upload your PDF to password protect pdf — encrypt files free

Drag & drop a PDF, or click to browse

Choose File

PDF files only · Max 50 MB

Processed locally in your browser
Never uploaded to any server
Auto-deleted after session
Instant processing
Pro Tip

Did you know? You can double-click any text in the editor to edit it directly. PDFino automatically matches the original font style!

Add password protection to PDF files for free. Encrypt your documents with a secure password. Browser-based encryption — your files never leave your device.

100% Browser-Based
Files Never Leave Your Device
No Installation Required
Fast Processing
Mobile Friendly
Secure PDF Editing
Privacy Focused
100% Browser-Based
Files Never Leave Your Device
No Installation Required
Fast Processing
Mobile Friendly
Secure PDF Editing
Privacy Focused

How to password protect pdf — encrypt files free

1

Upload

Select your PDF files from your computer or drag and drop them into the upload area.

2

Process

Wait a few seconds while our system handles the password protect pdf — encrypt files free.

3

Download

Once finished, download your new PDF file directly to your device for free.

Secure Your PDFs With Password Encryption

Protect sensitive PDF documents with password encryption before sharing them. PDFino encrypts your PDF locally in your browser using industry-standard AES encryption. Set a password that recipients must enter to view the document. Perfect for protecting contracts, financial records, medical documents, and any confidential information. Since encryption happens on your device, your unprotected document never travels over the internet.

Frequently Asked Questions

PDFino uses industry-standard PDF encryption that's compatible with all major PDF readers.