A C#/WPF wrapper around Valve Corporation's vtex.exe VTF Converter
Installation:
git clone https://github.com/cooolbros/vtf-converter.git
Usage (GUI):
dotnet run --project vtf-converter
Usage (C#)
Include vtf-converter/vtf.cs and vtf-converter/TGASharpLib.cs in your project
string TeamFortress2Folder = "C:\\Program Files (x86)\\Steam\\steamapps\\common\\Team Fortress 2";
VTF VTFConverter = new VTF(TeamFortress2Folder);
VTFConverter.Convert("path/to/image.png", "path/to/texture.vtf");