YOSHI'S WOOLLY WORLD · MODDING WORKSPACE

Unravel your GFA archives.

Extract and rebuild Good-Feel archives right in your browser. The archive engine is compiled from Rust to WebAssembly; your files stay on your device.

First-time setup The WebAssembly engine has to be built by GitHub Actions before the tools become active. Follow the setup steps in the project README, then reload your Pages site.

↙

ARCHIVE TO FILES

Extract a GFA

Choose a .gfa archive. WoollyTools will unpack its files and bundle them into a ZIP download.

↑Choose a GFA archiveClick to select a .gfa file

No archive selected

↗

FILES TO ARCHIVE

Create a GFA

Select a folder of extracted game files and rebuild it as a Good-Feel archive.

＋Choose an extracted folderFolder structure and filenames are preserved

No folder selected

GfArch version Compression Use Yoshi's Woolly World GFCP offset (0x2000)

Local processing

Files are read and processed in your browser. They are not uploaded to a server.

Rust-powered

Uses the gfarch Rust library that powers Tangle's GFA handling.

Made for modding

Start with extraction and repacking. More Yoshi-specific editors can come later.