A Pixel Art Remastering Tool using classic algorithms that can open and export jpg, png, animated gif. · By marcoc2
Can i use this to create assets for my game in development?
You can export the output result as image. If that works for you as creating assets so the answer is yes.
The only filters that do not allows exporting are the shaders from the GPU tab.
If you manage to create those assets or have any other question let me know.