Examine source code of Blog Comment Highlighter

{
  "manifest_version": 3,
  "name": "Blog Comment Highlighter",
  "version": "1.0",
  "description": "Highlights all comments on blogs for easier reading.",
  "icons": {
    "48": "icon.png"
  },
  "permissions": [
    "activeTab",
    "storage"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "blog-comment-highlighter@example.com"
    }
  }
}