# Free Graphical User Interface for NGEN
Invantive Dotnet Optimizer provides a graphical user interface to NGEN. It allows you to easily optimize the start time of your Microsoft .NET applications by pre-compiling the executable and related assemblies into native code.
# 32 and 64 bit native versions
The Dotnet Optimizer always generates both 32 and 64 bit native versions of your code, since subtleties in how .NET chooses the runtime version easily impact the performance perceived by your end users. The Invantive Dotnet Optimizer ensures your users wait till the compilation into native code has been finished.
# Easy to bundle
You can facilitate your end users by packaging the executable as a resource in your assembly. From the menu, you can unpack it and run it with elevated privileges. The Invantive Dotnet Optimizer has been tested to correctly process ClickOnce applications as well as VSTO-based add-ins for Microsoft Office deployed through ClickOnce.
# Tips for NGEN
Please note that Microsoft NGEN generates a log file. As described on http://go.microsoft.com/fwlink/?linkid=210113 you can increase the verbosity to analyse issues during the creation of native code. Also, you can use the Fusion Log Viewer to analyze the loading of your assemblies.