Protect PDF
Require a password to open the file and choose what readers can do.
- 1Add files
- 2Adjust
- 3Download
Drop your PDF here
or choose a file from your device · PDF
Files open in this tab and are never uploaded.
How do I use Protect PDF without uploading?
Open LocalPDF Protect PDF, add your PDF, adjust the settings and click Protect PDF. Everything runs in your browser, so your file is processed on your own device and never uploaded. It's free, needs no account and adds no watermark.
- 1
Add your PDF
Drag it onto the page or choose it from your device. It opens in this tab — nothing is uploaded.
- 2
Adjust the settings
Tweak the options in the settings panel, or keep the recommended defaults.
- 3
Protect PDF
Processing runs on your device in seconds. Download the result or continue with another tool.
Protect PDF FAQ
Guides
How to Password-Protect a PDF in Your Browser
Lock a PDF with a password using AES-256 encryption, choose what readers can do, and share it safely. Free, no upload, works on any device.
7 October 2026
e-Aadhaar PDF Password: What It Is and How to Remove It
Downloaded your e-Aadhaar and it's asking for a password? Here's the password format UIDAI uses, how to open the file, and how to save an unlocked copy safely.
6 November 2026
Is It Safe to Upload PDFs to Online Converters?
What really happens to your files when you upload them to free PDF websites, the risks for IDs and bank statements, and how local, in-browser tools avoid them.
16 September 2026