minecraft jar decompiler & remapper

upload a mod jar (any version, 1.0 → 26.1.2). it gets auto-detected, remapped, decompiled, and returned as a zip. files are deleted after download.

1. pick a jar

2. mappings (auto-filled, override if needed) mc version source ns target ns yarn build parchment mcp channel mcp version decompile to sources

jars are processed in a sandbox (no network, no host fs). max 100 MB. rate-limited by IP.