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"
  }
}