.FZZ File Extension
Fritzing Shareable Project File
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What is an FZZ file?
An FZZ file is a shareable project file created by Fritzing, an open-source electronics prototyping and design application. It is similar to a project file (.FZ file) but has been compressed so it can be shared among Fritzing users.
Fritzing is a printed circuit board (PCB) design application that Arduino and other PCB enthusiasts use to create PCB layouts. Fritzing projects contain a digital representation of a real-world electronic circuit. Typically, Fritzing projects are saved as FZ files, but those who want to share their project with others can export the project as a compressed FZZ file.
FZZ files contain every file a user needs to open and edit a project in Fritzing, including any custom parts (.FZPZ files) the project includes. This makes it easy for Fritzing users to share projects with each other, even if they do not have the same bins and parts installed in their separate instances of Fritzing.
How to open an FZZ file
You can open an FZZ file in Fritzing, which is available for Windows, Mac, and Linux. To do so, open Fritzing, select File → Open... from the program's menu bar, and then navigate to and open your FZZ file.