Protect PDF
Add password protection to your PDF files.
Protect PDF
LiveBrowser-based PDF encryption is not supported.
True PDF password protection requires AES encryption, which cannot be safely performed in the browser. For real protection, use a desktop application such as Adobe Acrobat, LibreOffice Draw, or Microsoft Word (Save As → PDF → Encrypt).
We removed the previous in-browser flow because it embedded the password as plaintext metadata without actually encrypting the file — that gave a false sense of security.
About Protect PDF
Add password protection to your PDF files. PDFGuru's protect pdf is fast, private and free. There's no signup, no watermark and no software to install — everything runs right in your browser on any device.
- Works on every device
- No signup required
- Files removed automatically
- 100% free for personal use
How to use
- 1
Upload your file
Drag and drop your file or click the upload area to select it from your device.
- 2
Configure options
Choose any options you need. Sensible defaults are picked for you.
- 3
Process instantly
Click the action button and let Convert do the heavy lifting in seconds.
- 4
Download the result
Download your file or copy the output. No watermarks, no signup.
Frequently asked questions
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