Examine source code of Tab Organizer Lite

{
  "manifest_version": 2,
  "name": "Tab Organizer",
  "version": "1.0",
  "description": "Sort your open tabs by various criteria",
  "permissions": [
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{39273bc2-41e1-4948-a61f-6a17e09a9a6e}",
      "strict_min_version": "114.0"
    }
  },
  "icons": {
    "64": "icon64.png",
    "128": "icon128.png"
  },
  "browser_action": {
    "default_title": "Tab Organizer",
    "default_popup": "popup.html"
  }
}