You can quickly set LynxPDF as your default PDF viewer.

Set LynxPDF as Default PDF Viewer on Mac

1. Launch LynxPDF;

2. Click LynxPDF at the top left corner;

3. Settings -> Default Settings -> Set LynxPDF as the default PDF Viewer.

Set LynxPDF as Default PDF Viewer on Windows

Windows users need to change the default browser in system settings.

1. Click Settings -> Apps -> Default Apps;

2. Find LynxPDF in the application list;

3. Click the Change icon and choose LynxPDF;

4. Click Set default.