Examine source code of TabEdit

{
  "manifest_version": 2,
  "name": "TabEdit",
  "version": "1.4.2",
  "description": "Benenne deine Tabs um, um die Übersicht zu behalten.",
  "permissions": [
    "tabs",
    "activeTab"
  ],
  "browser_action": {
    "default_popup": "popup.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"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9911699a-5922-4da2-958c-1710f33f2dc7}"
    }
  }
}