Examine source code of ReviewPing

{
  "manifest_version": 3,
  "name": "ReviewPing",
  "version": "1.0",
  "description": "Track your reviews, get refund alerts, and never miss a pending action on Amazon, Flipkart & Meesho.",
  "browser_specific_settings": {
    "gecko": {
      "id": "reviewping@comparekro.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "activeTab",
    "downloads",
    "storage"
  ],
  "host_permissions": [
    "*://*.amazon.in/*",
    "*://*.flipkart.com/*",
    "*://*.meesho.com/*"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_title": "ReviewPing"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.amazon.in/*order*",
        "*://*.amazon.in/*your-account*",
        "*://*.flipkart.com/*order*",
        "*://*.meesho.com/*order*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "styles.css"
      ]
    },
    {
      "matches": [
        "*://*.amazon.in/*",
        "*://*.flipkart.com/*"
      ],
      "js": [
        "notification.js"
      ],
      "css": [
        "notification.css"
      ]
    }
  ]
}