Examine source code of Quick Tabs

{
  "manifest_version": 2,
  "name": "Quick Tabs",
  "version": "0.1.8",
  "description": "A floating button with multiple functions like closing, refreshing, and switching tabs",
  "permissions": [
    "activeTab",
    "tabs"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "styles.css"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "quick-tabs@bitbot",
      "strict_min_version": "123.0",
      "android_package_name": "org.mozilla.firefox"
    },
    "gecko_android": {
      "strict_min_version": "123.0",
      "package_name": "org.mozilla.firefox"
    }
  }
}