Protect & Unlock PDF

Protect your PDF files with a password. Processing runs in your browser.

Upload File

Drag & drop files here

or click to browse from your device

Preview

Upload a PDF file to see a preview.

How to Protect and Unlock PDF Files for Free in Your Browser

1. Choose and upload the PDF file you want to protect with a password or unlock.

2. Select your desired mode: 'Protect PDF' or 'Unlock PDF'.

3. Enter the password, check the real-time strength meter, and set permissions (for Protect mode).

4. Click the action button to instantly encrypt or unlock and download your PDF file.

Encrypted in Your Browser, Never Uploaded

Protected files are encrypted with AES-256, the strongest encryption in the PDF standard. Encryption and unlocking run entirely in your web browser. Your documents and passwords are never uploaded to any server.