Examine source code of Ultimate SEO

{
  "manifest_version": 2,
  "name": "Ultimate SEO Details",
  "version": "1.2.0",
  "description": "The most comprehensive SEO analysis extension. View complete on-page SEO details instantly — meta tags, headings, links, images, schema, social tags, performance, readability, and more. By IdeaMAX.",
  "author": "IdeaMAX",
  "homepage_url": "https://ideamax.eu/",
  "icons": {
    "48": "icons/icon.svg",
    "96": "icons/icon.svg"
  },
  "browser_action": {
    "default_icon": "icons/icon.svg",
    "default_popup": "popup/popup.html",
    "default_title": "Ultimate SEO Details"
  },
  "permissions": [
    "activeTab",
    "webRequest",
    "tabs",
    "contextMenus",
    "http://*/*",
    "https://*/*"
  ],
  "background": {
    "scripts": [
      "background/background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "ultimate-seo-details@ideamax.eu",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}