Identify Unknown File Type without Extension in Windows

If you unintendedly delete a file extension and forget what file is it, you can use this application to discover the file type. This free software is called TrIDNet and can be downloaded directly from its official site. If you're only going to discover one small file, I recommend to use online service here:

Select file to analyze:




If an error occurred, please go to this official online service

Note: .NET Framework is required in offline application