{
  "context": "Evaluates how well the solution uses Plotly.js to render a figure then export and optionally download static images. Focuses on correct API calls and options handling for format, dimensions, scale, background, and download flags.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "Render setup",
      "description": "Uses Plotly.newPlot or Plotly.react to render the provided data/layout/config into the target container before exporting.",
      "max_score": 20
    },
    {
      "name": "toImage options",
      "description": "Invokes Plotly.toImage with the requested format plus width/height/scale/backgroundColor options and returns the resulting data URL.",
      "max_score": 35
    },
    {
      "name": "Download trigger",
      "description": "When download is enabled, calls Plotly.downloadImage with the generated figure, requested format, and filename (defaulting sensibly if missing).",
      "max_score": 25
    },
    {
      "name": "Format guard",
      "description": "Validates the format against the allowed set before calling Plotly APIs and surfaces a clear error instead of issuing an unsupported export request.",
      "max_score": 20
    }
  ]
}