binner.ban — Wii Save `banner.bin` Editor

Single-file web app. Works with save-data banners only (WIBN). Channel/disc meta banners (IMD5+U8) and data.bin exports are not supported.

Open banner.bin

Drag & drop a raw save banner.bin here or use the Open button.

Tip: If you get “missing WIBN signature”, you likely uploaded a channel/disc banner (IMD5+U8) or an SD export data.bin. This tool supports save banner.bin only.

Backup your banner.bin before using this tool. This tool has only been tested on Dolphin.

Credits & Sources

Pokeacer — for releasing Wii Save Data Creation Guidelines (Dec 7, 2006). Not linked for security reasons. Primary spec for save-data banner.bin (WIBN), struct layout, flags, string sizes, and image requirements.
WiiBrew — Savegame Files. Article. Background on exported data.bin container (encryption/signing) versus raw NAND files.
Custom Mario Kart (Tockdom) — Image Formats. Article. Details on GX 4×4 tiling and RGB5A3 bit layout used for banner/icon textures.
HackMii — Marcan et al., The Elusive Banner (May 2008). Post. Explains channel/disc banners (IMET + U8 archive) to distinguish them from save banner.bin.
Dolphin Forums — Game banner graphic file extraction. Thread. Community notes confirming save banner.bin differs from channel/disc banners.
WiiBrew — Opening.bnr. Article. Context on disc/channel banner assets and formats (IMET/IMD5/U8).
ChatGPT 5 Thinking. One-shotting this tool within a few prompts.

Visuals

Credits & Sources