Examine source code of Metasync Seo

{
  "manifest_version": 2,
  "name": "Metasync Seo",
  "version": "1.0",
  "description": "SEO debugging tool for analyzing page metadata and network requests",
  "author": "Metasync",
  "homepage_url": "https://metasync.site/",
  "browser_specific_settings": {
    "gecko": {
      "id": "metasync-seo@metasync.site",
      "strict_min_version": "58.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "webRequest",
    "<all_urls>",
    "storage",
    "tabs",
    "activeTab"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Metasync Seo",
    "default_icon": {
      "48": "icon48.png",
      "96": "icon96.png"
    }
  },
  "icons": {
    "48": "icon48.png",
    "96": "icon96.png"
  },
  "content_security_policy": "script-src 'self'; object-src 'self'"
}