For over a decade, PDF-XChange Viewer has been a staple recommendation for Windows users seeking a lightweight, fast, and feature-rich alternative to Adobe Acrobat Reader. However, its licensing model is often misunderstood. While the software is famously "free," that freedom comes with specific conditions and limitations.
The license explicitly states: "The free version is free for viewing and annotating... but watermarks are applied to printed or saved modified documents." pdf xchange viewer license