Memory management in WPF applications is notoriously challenging, and the problem becomes more pronounced when working with document viewers that handle large files. Developers using Syncfusion's PdfViewerControl in WPF applications have encountered persistent memory leak issues that can cause applications to consume gigabytes of RAM and eventually crash. This article examines the documented issues, their root causes, and alternative approaches. The Problem Syncfusion's WPF PdfViewerControl exhibits memory leak behavior in several scenarios. The most commonly reported issue occurs when navigating away from a page containing the viewer control. Even after calling the Unload(true) method, the control fails to release memory properly, leading to continuous memory growth. The issue manifests particularly during repetitive operations. In stress tests involving repeatedly opening and closing PDF documents, memory consumption increases with each cycle until the application crashes.…