Does onnxruntime-web support XNNPACK backend?

[vadimkantorov]

There is no mention of it here in the docs:
https://github.com/microsoft/onnxruntime/tree/main/js/web#readme but #13912 suggests that it might be supported somehow (but maybe not tested?)

XNNPACK supports wasm-simd backend and quantization and is the main backend of tflite

[xadupre]

It should support XNNPack. This page may be out of date. You can track the release changes here: https://github.com/microsoft/onnxruntime/releases. Option --use_xnnpach triggers it.