Examine source code of Canonical Tag Viewer

{
  "manifest_version": 2,
  "name": "Canonical Tag Viewer",
  "version": "117.55.3",
  "description": "Check the canonical URL of any page, compare it with the current URL, and inspect SEO meta tags.",
  "browser_specific_settings": {
    "gecko": {
      "id": "{246a2471-b86b-4827-8d7f-239d976893b2}",
      "strict_min_version": "96.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "96": "icons/icon96.png",
      "128": "icons/icon128.png"
    },
    "default_title": "Canonical Tag Viewer",
    "default_popup": "src/popup.html"
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "96": "icons/icon96.png",
    "128": "icons/icon128.png"
  },
  "permissions": [
    "tabs",
    "activeTab"
  ]
}