Examine source code of Tasbeeh Reminder

{
  "manifest_version": 2,
  "name": "Tasbeeh Reminder",
  "version": "1.0",
  "description": "Shows a custom notification text every X minutes.",
  "permissions": [
    "alarms",
    "notifications",
    "storage",
    "<all_urls>"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Configure Notifications",
    "default_icon": "4145627.JPG"
  },
  "icons": {
    "48": "4145627.JPG",
    "96": "4145627.JPG"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "periodic-notifier@example.com",
      "strict_min_version": "58.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "web_accessible_resources": [
    "4145627.JPG"
  ]
}