Examine source code of Z-Extractor

{
  "manifest_version": 3,
  "name": "Z-Extractor",
  "version": "1.0.0",
  "description": "Extract and download media URLs from TikTok, YouTube, Instagram, X, and more.",
  "browser_specific_settings": {
    "gecko": {
      "id": "z-extractor@local",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "activeTab",
    "downloads",
    "storage",
    "tabs",
    "scripting"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "lib/browser-polyfill.js",
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "96": "icons/icon96.png",
      "128": "icons/icon128.png"
    },
    "default_title": "Z-Extractor"
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "96": "icons/icon96.png",
    "128": "icons/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "lib/browser-polyfill.js",
        "content/extractors/generic.js",
        "content/extractors/tiktok.js",
        "content/extractors/youtube.js",
        "content/extractors/instagram.js",
        "content/extractors/twitter.js",
        "content/content.js"
      ],
      "run_at": "document_idle",
      "all_frames": false
    }
  ]
}