You dont have to pay anything to run the http server, its hosted on your computer, also it doesnt use viewportframes… It creates PNG files that you can then upload as images and the use in a imagelabel. It renders the map in an isometric fashion which is going to be more accurate than a top down view with camera FOV set to < 5. You should really consider it as its very useful and will give you amazing results.
Go here: M̶i̶n̶i̶m̶a̶p̶ ̶C̶r̶e̶a̶t̶o̶r̶ ̶[̶R̶o̶R̶e̶n̶d̶e̶r̶]̶ DEPRECATED