metadata
tags:
- chess
- stockfish
- wasm
license: gpl-3.0
Stockfish.js WASM (GPL-3.0)
Stockfish 18 compiled to JavaScript/WebAssembly for browser use. Hosted here for CORS-friendly access from web chess applications.
License: GPL-3.0 — Stockfish is free software under the GNU General Public License.
Files
| File | Size | Description |
|---|---|---|
| stockfish-18-lite-single.js | ~21KB | JS loader (single-threaded, lite NNUE) |
| stockfish.wasm | ~7.3MB | WASM binary (lite NNUE network embedded) |
Source
Built from nmrugg/stockfish.js v18.0.0. Original Stockfish engine: official-stockfish/Stockfish.
Usage
Load as a Web Worker. The JS loader fetches stockfish.wasm from the same directory.
Communicates via UCI protocol over postMessage.
Used by CrispChess — downloaded at runtime, never bundled with the MIT-licensed app.