Examine source code of BuyOn Cashback

{
  "name": "BuyOn Cashback",
  "version": "9.4.5",
  "description": "Estensione che ti notifica la presenza di un negozio su BuyOn.",
  "options_ui": {
    "page": "pages/options.html"
  },
  "icons": {
    "16": "images/buyon-16.png",
    "19": "images/buyon-19.png",
    "32": "images/buyon-32.png",
    "38": "images/buyon-38.png",
    "48": "images/buyon-48.png",
    "128": "images/buyon-128.png"
  },
  "manifest_version": 2,
  "background": {
    "scripts": [
      "background.min.js"
    ]
  },
  "web_accessible_resources": [
    "images/buyon-icon-white.svg",
    "fonts/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "run_at": "document_end",
      "js": [
        "scripts/content_script.min.js"
      ]
    },
    {
      "matches": [
        "https://*.booking.com/*"
      ],
      "run_at": "document_end",
      "js": [
        "scripts/booking.min.js"
      ]
    },
    {
      "matches": [
        "https://*.amazon.it/*"
      ],
      "run_at": "document_end",
      "js": [
        "scripts/amazon.min.js"
      ]
    },
    {
      "matches": [
        "https://www.buyon.it/*",
        "https://beta.buyon.it/*"
      ],
      "run_at": "document_start",
      "js": [
        "scripts/website.min.js"
      ]
    }
  ],
  "browser_action": {
    "default_icon": "images/buyon-38.png",
    "default_title": "BuyOn"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "jid0-ZtuBeKBB2KtBuYJImW9FwJp7SxA@jetpack",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "scripting",
    "storage",
    "cookies",
    "tabs",
    "alarms",
    "http://*/*",
    "https://*/*",
    "<all_urls>"
  ],
  "optional_permissions": [
    "privacy"
  ]
}