Hey, Marumugi, thanks for the reply. I will try to resize them by myself, you think this is possible in Aseprite?
Viewing post in 8bit Retro Graphic Materials All-in-One Pack comments
Yes, it is possible with Aseprite!
Select “Sprite” from the top menu, then select “Sprite Size.”
Next, set the Width and Height values to 1/3 of the original values, as shown in the image. (We recommend turning on “Lock Ratio” for this step. When you enter either the Width or Height, the other will be automatically entered.)
Note that while you could set this using percentages (33.33%), we do not recommend this method as it may result in slight numerical errors.
Additionally, set the method to “Nearest-neighbor.”
Thank you!