1. open the correct xnb exporter for version of xnb file you are converting from.
2. type the name of the .xnb file into the text field without the .xnb extension and press "go for it!". for example to convert "image.xnb" file, you would type in "image".
2b. alternatively to convert all available .xnb files in the same folder where the executable is, simply leave the text field empty and press "go for it!".
3. the specified .xnb files will now be converted to .png images and saved in the same folder where the original files are with the same names.
attempting to convert an xmb image that is the wrong version will lead to the program crashing.