Files with .WGZ extension are System Files. The .WGZ file format is S60 Web Runtime Widget Package. WGZ files are supported on Mac OS and Windows. Nokia created the specification for WGZ files. WGZ files are compressed with ZIP compression. So WGZ files can be expanded using a ZIP utility. Nokia Suite handles WGZ files. 1 other tool can also open WGZ files. To open a WGZ file, first select and install a program that supports WGZ. Then right-click the WGZ file and select “Open with”. Choose the program to open the WGZ file. The second way is to associate WGZ files with a program in the Windows Registry. Many files contain simple text data. An outdated software won’t open current .WGZ file format. You need to update the software. Also scan the WGZ file for viruses with antivirus software. WGZ files are widgets for Nokia S60 phones. They are not meant to be opened directly. We don’t know how to convert WGZ files to other formats. Two known software programs related to .WGZ are Nokia Suite and Nokia PC Suite.