Examine source code of Quick Reply Email

{
  "manifest_version": 2,
  "name": "Quick Reply Email",
  "version": "1.0",
  "description": "This extension allows users to insert pre-defined quick replies into emails with one click, saving time on responses.",
  "permissions": [
    "activeTab",
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_icon": "icons/icon.png",
    "default_popup": "popup.html"
  },
  "icons": {
    "48": "icons/icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b2112888-608d-4036-abe0-4f4f835b71ad}"
    }
  }
}