Examine source code of Price Tracker

{
  "manifest_version": 2,
  "name": "Price Tracker",
  "description": "A simple and effective universal Price Tracker",
  "version": "2.0",
  "author": "Evagoon Inc.",
  "background": {
    "scripts": [
      "popup.js"
    ]
  },
  "permissions": [
    "tabs",
    "activeTab",
    "http://*/",
    "https://*/"
  ],
  "browser_action": {
    "default_icon": "logo.png",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.amazon.com/*",
        "*://*.amazon.in/*",
        "*://*.amazon.it/*",
        "*://*.aliexpress.com/*",
        "*://*.amazon.ca/*",
        "*://*.amazon.co.uk/*",
        "*://*.amazon.de/*",
        "*://*.amazon.es/*",
        "*://*.amazon.fr/*",
        "*://*.amazon.se/*"
      ],
      "js": [
        "match.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{66a50783-f361-48b4-8a4f-576ffed9e81d}",
      "strict_min_version": "102.0"
    }
  }
}