Examine source code of Notepad Sidebar Basic

{
  "manifest_version": 2,
  "name": "Notepad Sidebar Basic",
  "version": "1.0",
  "description": "Notepad Sidebar is extension Quick note-taking in the browser's sidebar.",
  "permissions": [],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "128": "images/sider-logo.png"
    }
  },
  "icons": {
    "128": "images/sider-logo.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a6020998-f6b6-4ace-9c76-30bb68a81edb}"
    }
  }
}