mii2studio is a command-line tool written in Python that can take any Mii from a Wii, 3DS, Wii U, Miitomo, or Switch and output it into a file that Mii Studio can load. Mii Studio is an online Mii editor that was made as a successor to Miitomo.
Furthermore, the tool also outputs a link to the Mii rendered in PNG form, thanks to an API endpoint that Nintendo made (it's one of the coolest things ever). The Miis are encoded (probably due to obfuscation) and additional parameters for the API can be played with here (facial expressions, showing a full body, renders of multiple 360° angles of a Mii's body, etc). We use the Mii renderer for our Check Mii Out Channel revival's companion site.
Also, the tool can print out some useful information about a Mii, like its birthday, height, weight, name, gender, favorite color, pants color (which isn't a thing on the Switch and Mii Studio), and more.
Example of a rendered Mii:
Download the bundled application from here. It's a Python script embedded in a binary, for your convenience. The source files are available too if you need to use that instead for some reason.
Command Syntax: mii2studio <input mii file / qr code / cmoc entry number> <output studio mii file> <input type (wii/3ds/wiiu/miitomo/switch/switchgame/studio)>
The script can also be ran without parameters.
- Using a Mii binary file from a Wii:
python mii2studio.py /path/to/BobRoss.mii /path/to/BobRoss.studio wii - Using a 3DS QR Code:
python mii2studio.py "https://www.miicharacters.com/miis/qr_large/20150_bobross.jpg" /path/to/Bob.studio 3ds - Using a Check Mii Out Channel entry number:
python mii2studio.py 3136-3713-5980 /path/to/BobRoss.studio wii
The script will output the file ready to be used in Mii Studio, along with image URLs of the Mii's face and body rendered as PNGs, and some useful information about the Mii.
You can use almost every Mii format with this script:
- Mii binary files from many platforms
- Wii
- 3DS
- Wii U
- Switch
- Mii format used in the Mii DB on the Switch NAND
- Mii format used in save files in Switch games
- Mii Studio (in decoded form)
- Mii QR Codes from many platforms
- 3DS
- Wii U
- Miitomo
- Tomodachi Life
- Miitopia
- 12-digit entry numbers for Miis uploaded to RiiConnect24's Check Mii Out Channel revival
- Generation 1: Wii and DS
- Generation 2: 3DS, Wii U, and Miitomo
- Generation 3: Switch and Mii Studio
Kaitai is an incredibly useful tool that can document file structures and read them. We use them to document the Mii file structures, and are used in mii2studio. The .ksy file is in the Kaitai language, and the .py is used at runtime for Python scripts (and can be compiled with Kaitai's IDE).
- bendevnull for his support.
- HEYimHeroic for helping in many ways, without her help we wouldn't have this tool.
- jaames for the Mii QR decrypting script.
- Larsenv for writing this script.
- Matthe815 for figuring out the obfuscation used for the Mii Studio renderer.