Texture Remix (my image manipulation tool) - v1.2.0

[Peardian]

Oh. This is just a channel swapper. I'd thought maybe you had an app that would be able to convert normal maps between spaces (Pokémon X/Y/OR/aS use Object space for their normal maps, but tangent space is loads more common).

That kind of thing is impossible without referencing the original model's geometry, and is even further impossible if the model reuses UVs (like Pokémon).