Examine source code of OneClick SEO

{
  "manifest_version": 3,
  "name": "OneClick SEO",
  "version": "1.1.0",
  "description": "100% Free browser-based website auditing tool for SEO, Headings, Broken Link Checker, Redirect Path, and Schema analysis.",
  "browser_specific_settings": {
    "gecko": {
      "id": "oneclick-seo@site-lens.com"
    }
  },
  "permissions": [
    "activeTab",
    "scripting",
    "storage",
    "tabs",
    "webRequest",
    "webNavigation"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "action": {
    "default_popup": "sidepanel.html",
    "default_title": "OneClick SEO",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "service_worker": "background.js"
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  }
}