Examine source code of JSON Formatter Pro

{
  "manifest_version": 3,
  "name": "JSON Formatter Pro",
  "version": "1.0.0",
  "description": "Professional JSON formatter with dark theme, syntax highlighting, and collapsible trees",
  "permissions": [
    "activeTab",
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "browser-polyfill.js",
        "content.js"
      ],
      "css": [
        "styles.css"
      ],
      "run_at": "document_end"
    }
  ],
  "action": {
    "default_popup": "popup.html",
    "default_title": "JSON Formatter Pro",
    "default_icon": {
      "16": "icon.png",
      "32": "icon.png",
      "48": "icon.png",
      "128": "icon.png"
    }
  },
  "icons": {
    "16": "icon.png",
    "32": "icon.png",
    "48": "icon.png",
    "128": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "json-formatter-pro@isekai.nextgen.apps.gmail.com",
      "strict_min_version": "109.0"
    }
  }
}