Protect PDF
Add a password to your PDF. Encryption is applied locally in your browser. Your password and file never leave your device.
Drag & drop files here
or
Choose filesProcessed on your device. Nothing is uploaded
How to Protect PDF
- 01Add your files
Click “Choose Files” or drag and drop them onto the page. Batch conversion is supported.
- 02Adjust settings
Pick quality, size or other options. Sensible defaults are pre-selected.
- 03Convert & download
Hit Convert and download your files. Everything runs locally. Nothing is uploaded.
Frequently asked questions
How do I use Protect PDF?
Drop your PDF onto the page, adjust the settings and hit the action button. The result downloads directly from your browser. The file is never uploaded.
Is Protect PDF free?
Yes. Free with no limits or watermarks, because everything runs on your own device.
Is my PDF uploaded?
No. All processing happens locally in your browser via WebAssembly. Your document never leaves your device.