config.json

{
  "model_type": "modnet",
  "transformers.js_config": {
    "dtype": "fp32",
    "device_config": {
      "webnn": {
        "free_dimension_overrides": {
          "batch_size": 1,
          "num_channels": 3,
          "height": 256,
          "width": 256
        }
      }
    }
  }
}