Examine source code of QuoteGoat

{
  "applications": {
    "gecko": {
      "strict_min_version": "58.0a1"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "browser_style": false,
    "default_title": "QuoteGoat Cashback Extension",
    "default_popup": "extension_popup.html"
  },
  "icons": {
    "16": "icons/icon16.png",
    "100": "icons/icon100.png"
  },
  "content_security_policy": "script-src 'self' ; object-src 'self'",
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "js/jquery-3.3.1.min.js",
        "content-script.js"
      ]
    }
  ],
  "description": "Get the latest deals, cashback and coupons from most popular stores at quotegoat.com.",
  "homepage_url": "https://www.quotegoat.com/",
  "manifest_version": 2,
  "name": "QuoteGoat Cashback Extension",
  "permissions": [
    "tabs",
    "storage",
    "webRequest",
    "*://*/*"
  ],
  "version": "1.1"
}