WMF Viewer 2.6.3
You can navigate through the images in a folder using navigation keys and keyboard shortcuts. Changing the view size allows to view at different zoom amounts.
Also you have ability to rotate selected WMF file.
To convert a WMF File, choose one of the export formats and select Convert option or press button. The export resolution can be changed under WMF Viewer Drawer Preferences. You may set also the default destination format, and the default location for the converted files.