Examine source code of Seofy

{
  "manifest_version": 2,
  "name": "Seofy",
  "version": "3.0",
  "description": "A progressive Extension for Technical SEO Needs.",
  "homepage_url": "https://fahadbinzafar.com/seofy/",
  "icons": {
    "48": "icons/seo-tag-48.png",
    "96": "icons/seofy-icon-96.png"
  },
  "permissions": [
    "activeTab",
    "storage",
    "tabs"
  ],
  "browser_action": {
    "default_icon": "icons/seo-tag-48.png",
    "default_title": "Seofy",
    "default_popup": "popup/seofy-popup.html"
  }
}