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stockfish-js-wasm
cstr/stockfish-js-wasm
stockfish-js-wasm is a machine learning model from cstr. Use it for the machine learning task on the model card, and read the license before you ship it in a product. The card lists the license as gpl-3.0.
Stockfish 18 compiled to JavaScript/WebAssembly for browser use. Hosted here for CORS-friendly access from web chess applications.
Access
Public
Updated Jun 14, 2026
Repo size
17.8 MB
Likes
0
Public
Repo makeup
Click a slice to open those files.
.wasm14.6 MB · 58%
At a glance
- License
- gpl-3.0
- Access
- Public
- Created
- Jun 14, 2026
- Updated
- Jun 14, 2026
- SHA
- 84290e01
Model card
From the Hugging Face model README
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.
- License
- gpl-3.0
- Created
- Jun 14, 2026
- Updated
- Jun 14, 2026