Examine source code of Crypto Info

{
  "name": "Crypto Info",
  "description": "Crypto Info is a web site that wants you to know the price of crypto coins all the time.",
  "version": "1.0.2resigned1",
  "browser_action": {
    "default_title": "Crypto Info Prices.",
    "default_icon": "icon.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "optional_permissions": [
    "notifications"
  ],
  "permissions": [
    "notifications"
  ],
  "icons": {
    "64": "icon.png"
  },
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "{c7f34a15-2f1f-41a9-8801-528565fef9df}"
    }
  }
}