Examine source code of QR Code Generator Free

{
  "manifest_version": 2,
  "name": "QR Code Generator Free",
  "version": "1.1",
  "description": "Generates a QR code for the current URL. Once the QR code is created, you can customize it to your liking. Change the color, add your logo, change the QR design, and much more!",
  "permissions": [
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{3c714d9d-e539-44eb-ab8d-ce80c84f4d37}",
      "data_collection_permissions": {
        "required": [
          "browsingActivity"
        ]
      }
    }
  },
  "browser_action": {
    "default_icon": {
      "96": "icon.png"
    },
    "default_title": "QR Code Generator Free"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  }
}