The tileset editor is in development.
Due to some problems, I could not devote much time to it, but I still made part of the editor working. 
The part concerning the unconditional selection of various tilesets is ready.
The self-identification part for tilesets is in development now.

This is to adapt elements that will be taken from different tilesets such as a 48x48 piece and adapt it to 16x16 in 8 bits.
In addition to this of course, you also need to know what type of resource you are using. e.g. an A4, A5 a set of tiles, based on these properties the auto tools will be made.