RPG Maker Tile Resizer
This is not a plugin but a small JS script that scales all your 32pixel/tile images to 48px/tile scaled versions.
If you use this fantastic plugin...
This is Krizzirk Toeuia Aeslan, I'm picking up transmission. Draftwingeds on, duty on, exhaust ready. 310 Immulicationsers approaching. I'll take the cake and----hold it!!! My Cosvere Radar detected 3001 of them!!