Protect PDF Online Free

Secure your PDF files by adding a password and encrypting the contents.

How to Use Protect PDF

  1. Select or Drop Files — Upload 1 file or select multiple files at once.
  2. Adjust Settings — Fine-tune quality, target size, or tool-specific parameters.
  3. Download Result — Download the processed file or all files as a ZIP.

Why Use Our Protect PDF?

ImageConvert Tools provides high-performance, private, client-side processing. All operations run entirely in your browser — your files never leave your device.

No registration, no watermarks, no upload limits. Works on any device.