Examine source code of TabDefrag

{
  "manifest_version": 2,
  "name": "TabDefrag",
  "version": "1.0.3",
  "description": "Search, deduplicate and organize your browser tabs. Jump to any open tab instantly or group tabs by domain.",
  "permissions": [
    "tabs",
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "tabdefrag@naveennairs",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "sidebar_action": {
    "default_title": "TabDefrag",
    "default_panel": "sidepanel.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  }
}