Compile your existing projects written in C or C++ — or any language that uses LLVM — to browsers, Node.js, or wasm runtimes.

Emscripten converts OpenGL into WebGL, and has support for familiar APIs like SDL, pthreads, and POSIX, as well as Web APIs and JavaScript.

Thanks to the combination of LLVM, Emscripten, Binaryen, and WebAssembly, the output is compact and runs at near-native speed.