Examine source code of AdspenGO

{
  "manifest_version": 2,
  "short_name": "AdspenGO",
  "name": "AdspenGO",
  "version": "1.0.0",
  "browser_action": {
    "default_icon": "logo192.png",
    "default_title": "AdspenGO"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "run_at": "document_end",
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "js": [
        "content-script.js"
      ]
    }
  ],
  "permissions": [
    "storage",
    "tabs",
    "activeTab"
  ],
  "web_accessible_resources": [
    "index.html"
  ],
  "start_url": ".",
  "display": "standalone",
  "theme_color": "#000000",
  "background_color": "#ffffff"
}