Examine source code of QuickScreen Capture iss

{
  "manifest_version": 2,
  "name": "QuickScreen Capture",
  "version": "1.0",
  "description": "Capture visible tab screenshot and copy to clipboard with one click.",
  "permissions": [
    "activeTab",
    "tabs",
    "clipboardWrite"
  ],
  "browser_action": {
    "default_icon": "icon.png",
    "default_title": "Quick Screenshot",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f63c6d5f-f997-4419-89bb-d889ba44cb4a}"
    }
  }
}