Emscripten

Emscripten is a complete compiler toolchain to WebAssembly, using LLVM, with a special focus on speed, size, and the Web platform.

Source-to-source compiler · by Alon Zakai · emscripten.org

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What Emscripten’s own pages say

What it says it doesEmscripten is a complete compiler toolchain to WebAssembly, using LLVM, with a special focus on speed, size, and the Web platform. emscripten.org
PlatformsNode.js, browsers, wasm runtimes emscripten.org

Each value is a quote AirStack found on the product’s own pages, read 2026-11-04. A missing field means AirStack has not found it on its pages.