Pro

1. Lightweight and Fast: Sumatra PDF is a lightweight application that opens PDFs and other supported formats quickly, using minimal system resources.

2. User-Friendly Interface: It features a simple and intuitive interface, making it easy for users to navigate through documents without a steep learning curve.

3. Portability: Sumatra PDF is available as a portable version, allowing users to run it from USB drives without installation, making it convenient for use on multiple devices.

Con

1. Limited Features: Sumatra PDF lacks advanced features such as annotation tools, form filling, and digital signatures, making it less suitable for professional or academic use.

2. Basic User Interface: The minimalistic design means fewer customization options and tools, which can be insufficient for users needing a more robust PDF management system.

3. No Editing Capabilities: Sumatra PDF does not offer any PDF editing functions, compelling users to rely on other software for tasks like text or image modifications within documents.