Fzz Viewer [exclusive]

If you only need to see the PCB for manufacturing, you can use a Gerber viewer if the creator has already exported the "Extended Gerber" files. Troubleshooting Common Issues Fritzing Blog

For the casual user who just received a single .fzz file via email: This 10-second trick is the closest thing to a universal FZZ Viewer available today. fzz viewer

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). If you only need to see the PCB

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: If the file is password-protected (some enterprise FZZ

Open the application. Navigate to File > Open and select your .fzz file. If the file is password-protected (some enterprise FZZ files are encrypted), you will be prompted for a key.