Examine source code of HTML/CSS Extractor

{
  "manifest_version": 3,
  "name": "HTML/CSS Extractor",
  "version": "1.2.0",
  "description": "Extract HTML & CSS from any element with live preview, smart selector simplification, and syntax-highlighted editor",
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "permissions": [
    "scripting",
    "activeTab",
    "tabs"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "service-worker-loader.js"
    ],
    "type": "module"
  },
  "devtools_page": "src/devtools.html",
  "web_accessible_resources": [
    {
      "matches": [
        "<all_urls>"
      ],
      "resources": [
        "src/devtools-panel.html",
        "docs.html"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "html-css-extractor@maxivaneychyk.dev",
      "strict_min_version": "109.0"
    }
  }
}