Examine source code of JP Free SEO Checker

{
  "manifest_version": 3,
  "name": "JP Free SEO Checker",
  "short_name": "JP SEO Checker",
  "version": "2.1.1",
  "description": "Free SEO checker: audit title/meta tags, headings, robots.txt, sitemap.xml, Open Graph & broken links. Highlights issues on-page.",
  "author": "Jagdish Prajapat",
  "homepage_url": "https://jagdishprajapat.com",
  "action": {
    "default_popup": "popup.html",
    "default_title": "JP Free SEO Checker",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "permissions": [
    "activeTab",
    "scripting"
  ],
  "optional_host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "seo-inspector@jagdishprajapat.com",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}