What

ONNXRuntime supports wasm targets via it's onnxruntime for web bindings.

According to this page you can build a static lib of onnxruntime for wasm targets which you can then bundle with your C++ WebAssembly. project.

From what I understand, the wasm lib provides the same C API that regular onnxruntime provide.

Why

Supporting wasm targets will make it easy to deploy models built with ort to web browsers and wasm runtimes such as WasmTime and Wasmer.

Since wasm-runtimes are cross-platform, users can bundle their models along with pre and post processing code in a single, universal, executable module that they can then run on browsers or on any wasm-runtime.