Web converter · no server · files stay in this tab

Convert
in the browser.

Drop several game zips plus neogeo.zip and this tab converts them one after another. Neither the rom nor the result ever leaves it.

neogeo.zip (BIOS) is required — drop it together with the game zip. Without it nothing converts.
Many games at once — drop several game zips and they convert one after another. No refresh between games.
MAME Neo Geo romset zips only — a romset whose names or chip CRCs differ from MAME will not convert. For a merged set, add the parent zip too (kof98h.zip + kof98.zip).

Drop rom zips Click or drag here · multiple files allowed (game zip + neogeo.zip)

Region System

Pick an output Per game — straight onto the HOME menu

Game CIA.cia → install with FBI

For the launcher — many games in one app

Launcher file.neo3ds → /neo3ds/games/

Progress

Each step reports here. Download right here when it is done.

1
Checking romset
Find the romset by zip name and check chips by CRC.
2
Compressing graphics
Pack sprites into 16KB zstd blocks.
3
Icon·banner
Icon (48×48) and banner (256×128) from the title or from a picture you pick.
4
Packing the output
Bundle the output with WASM tooling.

Each log line shows the elapsed time, game and stage. Outputs are usually tens of MB.

Reports go through the form on the intro page. The log and game details of the failed run travel with you.

Report