Examine source code of QuickPhrase

{
  "manifest_version": 2,
  "name": "QuickPhrase",
  "version": "1.0",
  "description": "QuickPhrase is a free Firefox extension for rephrasing content online, anytime, anywhere. Enhance your writing effortlessly.",
  "icons": {
    "48": "icon.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{0b6a2ed5-c210-40a7-ac8e-ce89082b85f9}"
    }
  }
}