
You can download and use about 70% of the features in PDF-XChange Editor for free indefinitely [2, 4]. While "Pro" features will add a watermark to your saved documents, many essential tools for viewing, basic editing, and annotating are completely free [2, 3].
Using unauthorized license keys violates the End User License Agreement (EULA) and is a form of software piracy, which can have legal consequences for individuals and businesses alike [5]. The Better Way: Use the Free Version or Buy Legally
By choosing a legal path, you protect your digital security and support the developers who continue to improve the tool.