If you didn’t create the FZ file yourself and aren’t 100% sure of its source, treat it with caution. Run a security scan before attempting to open it, and consider using an online viewer in a sandboxed browser session for extra protection.
Use this method if you just need to inspect the metadata, verify component names, or fix a corrupted line of code within the file. You will not see a visual circuit diagram using this method. Troubleshooting Common FZ File Issues fz file viewer
Before diving into viewers, you must understand that the .fz extension is polymorphic. Depending on the context, it can represent three very different file types: If you didn’t create the FZ file yourself