Examine source code of Retraction Risk Scanner

{
  "manifest_version": 3,
  "name": "Retraction Risk Scanner",
  "version": "1.0",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html"
  },
  "permissions": [
    "activeTab",
    "scripting",
    "storage"
  ],
  "host_permissions": [
    "https://www.retractionrisk.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "scanner@retractionrisk.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}