Here is a breakdown of what this likely refers to and how to access it, as it most commonly relates to electronics design:
Get the latest version from the official Fritzing download page . Launch the App: Open Fritzing on your computer. fzz viewer
Since an .fzz file is just a renamed ZIP archive, you can technically "view" its contents using any archive tool (WinRAR, 7-Zip, macOS Archive Utility). Here is a breakdown of what this likely
An .fzz file is a "Shareable Project File" used by the Fritzing application. Unlike standard image files, an FZZ file is a compressed archive containing: fzz viewer
Here’s a breakdown of what that feature might involve and how it could be implemented or used.