Protect PDF
Add a password to your PDF with 256-bit AES encryption. Free, no upload, 100% browser-based.
Drop your files here
or click to browse
How to Protect a PDF with a Password
- Drop your PDF file in the box above or click "Browse" to select it.
- Enter a password and confirm it.
- Optionally configure advanced permissions (printing, copying, editing).
- Click "Protect PDF" and download your encrypted file.
Why Protect PDFs with Priva.TOOLS?
100% Private
Your PDF and password never leave your device. Unlike other tools, we don't upload your files to any server. Encryption happens entirely in your browser using WebAssembly.
Military-Grade Encryption
256-bit AES encryption, the strongest available for PDF. Your documents are protected with the same standard used in banking and defense.
Fine-Grained Permissions
Control exactly what recipients can do: allow or block printing, text extraction, and document modification.
Works Offline
Since everything runs locally, you can protect PDFs even without an internet connection after the page loads.
Frequently Asked Questions
- Is it safe to protect my PDF here?
- Yes. Priva.TOOLS processes everything in your browser using WebAssembly. Your file and password never leave your device.
- What encryption does this use?
- We use 256-bit AES encryption, the same standard used by banks and governments. This is the strongest encryption available for PDF files.
- What is the difference between user and owner password?
- The user password is required to open the PDF. The owner password controls editing permissions like printing, copying, and modifying. If you only set one password, it applies to both.
- Can I restrict printing or copying?
- Yes. Use the Advanced options to set an owner password and choose which permissions to allow or deny, including printing, modifying, and text extraction.
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