Examine source code of Source vs Render SEO

{
  "manifest_version": 3,
  "name": "__MSG_extensionName__",
  "version": "1.2.1",
  "description": "__MSG_extensionDescription__",
  "permissions": [
    "activeTab",
    "scripting",
    "storage",
    "tabs",
    "webNavigation"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "src/background/service-worker.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "src/content/content-script.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "action": {
    "default_popup": "src/popup/popup.html",
    "default_title": "__MSG_extensionName__",
    "default_icon": {
      "16": "icons/status/indexable-no-js-diff-16.png",
      "48": "icons/status/indexable-no-js-diff-48.png",
      "96": "icons/status/indexable-no-js-diff-96.png",
      "128": "icons/status/indexable-no-js-diff-128.png"
    }
  },
  "options_ui": {
    "page": "src/options/options.html",
    "open_in_tab": true
  },
  "icons": {
    "16": "icons/store/source-vs-render-seo-16.png",
    "48": "icons/store/source-vs-render-seo-48.png",
    "128": "icons/store/source-vs-render-seo-128.png"
  },
  "default_locale": "en",
  "browser_specific_settings": {
    "gecko": {
      "id": "source-vs-render-seo@example.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "strict_min_version": "142.0"
    }
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  }
}