Open in PDF-XChange Viewer is a Firefox extension designed to enhance the way users interact with PDF files. Once installed, it seamlessly integrates into the browser by adding an option to the right-click context menu for PDF links. This allows users to open PDF documents directly in PDF-XChange Viewer, streamlining the process of viewing and managing PDF files. The extension can also be configured to automatically download PDF files for local access, providing further flexibility in handling documents.

The extension requires a small native client to facilitate communication with the PDF-XChange Viewer, which is compatible with Windows. However, it is important to note that native clients for Mac and Linux systems are not currently available, limiting the extension's use to Windows users for full functionality. Overall, this tool serves as a straightforward enhancement for those who frequently work with PDF documents.