Examine source code of Code Extractor

{
  "manifest_version" : 3 ,
  "name" : "Web Dev Code Extractor",
  "version" : "1.0.0",
  "description" : "Extract HTML and CSS code from webpage elements with a modern interface",
  "browser_specific_settings": {
    "gecko": {
      "id": "web-dev-code-extractor@example.com"
    }
  },
  "permissions" : [
    "contextMenus" ,
    "activeTab" ,
    "scripting" 
  ],
  "background" : {
    "scripts" : [
      "background.js" 
    ]
  },
  "content_scripts" : [
    {
      "matches" : [
        "<all_urls>" 
      ],
      "js" : [
        "content.js" 
      ],
      "css" : [
        "modal.css" 
      ]
    }
  ],
  "action" : {
    "default_popup" : "popup.html",
    "default_title" : "Web Dev Code Extractor"
  },
  "icons" : {
    "16" : "icons/icon.png",
    "32" : "icons/icon.png",
    "48" : "icons/icon.png",
    "128" : "icons/icon.png"
  }
}