Protect PDF

Encrypt a PDF locally with a password.

Drop one PDF to protect

or click to browse

PDF files only · processed on this device

The password and PDF never leave your browser.

PRO

Save more time with Pro

Normal single-file processing stays free.

Apply to multiple PDFs

Run the same action locally across multiple files in one batch.

Open Pro →
Save as preset

Save reusable settings on this device for repetitive work.

Open Pro →
Run as workflow

Combine steps such as Compress → Watermark → Protect.

Open Pro →