Examine source code of UWorld2Anki

{
  "manifest_version": 2,
  "name": "UWorld2Anki",
  "version": "1.3",
  "content_scripts": [
    {
      "matches": [
        "https://apps.uworld.com/courseapp/usmle/*/testinterface/launchtest/*"
      ],
      "js": [
        "index.js"
      ],
      "css": [
        "btn.css"
      ],
      "run_at": "document_end"
    }
  ],
  "icons": {
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9db752d5-62cd-41da-9308-bbd1d87aad30}"
    }
  }
}