What is a NET file?
A .NET file can contain many different types of data. Often, it is a water distribution network model used by U.S. EPA EPANET. However, the .NET extension is also used for Borland Paradox network control files, Google Chrome web page archives, electronic circuit netlists in KiCad, and network topology projects in GNS3. Sometimes, it is a netViz Project File created by netViz. Because .NET has multiple possible meanings, you must identify the actual format of the file to open it correctly.
How to open NET files?
The correct software to open a .NET file depends on its actual format. If it is a water network model, you need U.S. EPA EPANET. If it is a circuit netlist, you need KiCad. Some .NET files are simply renamed .ZIP archives, .PDF documents, or .JPG images, which you can open with standard archive tools like WinZip or an image viewer.
viewer.online/net can analyze .NET files to identify the exact format and creator software, inspect the file structure, extract readable text, and check whether an online preview is available.
Best practices and troubleshooting
If your software cannot open a .NET file, do not force it. Since a .NET file might be an executable Microsoft .NET Framework assembly file, do not run it unless you trust the source. You can use a text editor like Notepad++ to inspect the file header. If the text looks like a netViz Project File or a network routing script, you will know which software to install.
File conversion
Once you know the exact file type, you can use convert.guru to convert your .NET file to sensible target formats. For example, if it is a renamed document or image archive, you can convert it to standard formats like .PDF, .JPG, or .ZIP.
Summary
viewer.online/net is useful for identifying, inspecting, and understanding .NET files without installing software or dealing with compatibility problems.