Examine source code of GasBest Gas Price Tracker

{
  "name": "GasBest Gas Price Tracker",
  "description": "Ethereum gas price extension with EIP-1559 support, fast updates, price prediction, and historical fee charts",
  "version": "0.6.1",
  "manifest_version": 2,
  "icons": {
    "16": "images/icon16.png",
    "24": "images/icon24.png",
    "32": "images/icon32.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "GasBest",
    "default_icon": {
      "16": "images/icon16.png",
      "24": "images/icon24.png",
      "32": "images/icon32.png"
    }
  },
  "permissions": [
    "storage",
    "notifications"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{971ef7fe-18be-4ccc-af21-11cd986acaa8}"
    }
  }
}