Ahh okey, you want to generate the server status banner on your own. Its not very difficulty.
1. You need to have the core image (I made all stuff that is mostly for need to make a counter strike source banner as core: https://www.pic-upload.de/view-35473...06e67.png.html
2. You need to grab the data Informations like (IP, Port, Online Status, Players Amount, Servername, Currentmap)
Here you have many opions how you can proceed. Im coding most of my stuff in c# so when your Desktop Application Developer use something like C#/Java or in other way try it with php and use the library here: https://github.com/Austinb/GameQ
I hope that helps you for the beginning. With one of the options how to made it you try to find the right position in there you want to have each data and generate from this a new picture.