It sounds like you're asking about a related to a "fzz viewer" — likely a file viewer for Fritzing files (which use the .fzz extension).
As of 2025, there is no official cloud-based Fritzing viewer from the development team. However, the maker community has found a workaround: fzz viewer
def sort_data(self, sort_by): # Sort data by error count or fuzzing time if sort_by == 'error_count': self.data = self.data.sort_values(by='error_count', ascending=False) elif sort_by == 'fuzzing_time': self.data = self.data.sort_values(by='fuzzing_time', ascending=False) return self.data It sounds like you're asking about a related
Since an FZZ file is a renamed .zip archive, any user can rename project.fzz to project.zip and extract the contents. Inside, they will find the SVG files for the breadboard, schematic, and PCB views. These standard vector images can be opened in any web browser or image viewer. However, this method separates the visual layout from the connection logic. A dedicated FZZ Viewer is superior because it maintains the link between the visual parts and the underlying connectivity data (the "nets"). Inside, they will find the SVG files for