axe-core/lib/checks/shared/has-alt.json

Accessibility engine for automated Web UI testing

{
  "id": "has-alt",
  "evaluate": "has-alt.js",
  "metadata": {
    "impact": "critical",
    "messages": {
      "pass": "Element has an alt attribute",
      "fail": "Element does not have an alt attribute"
    }
  }
}