Examine source code of Manga Reader

{
  "manifest_version": 2,
  "name": "Manga Reader",
  "version": "1.0.0",
  "description": "This add-on redesigns and adds new features to the beast manga websites, you can also save manga/manhwa/manhua.",
  "content_scripts": [
    {
      "matches": [
        "https://www.mangageko.com/reader/*",
        "https://www.mgeko.com/reader/*",
        "https://www.mgeko.cc/reader/*"
      ],
      "all_frames": true,
      "js": [
        "./website/assets/index-firefox.js"
      ],
      "css": [
        "./website/css/style.min.css"
      ]
    }
  ],
  "background": {
    "scripts": [
      "popup/background/main.js"
    ],
    "persistent": false,
    "type": "module"
  },
  "icons": {
    "512": "/icon.png"
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": {
      "512": "/icon.svg"
    },
    "default_title": "Manga Reader",
    "default_popup": "./popup/index.html"
  },
  "permissions": [
    "storage",
    "tabs",
    "*://developer.mozilla.org/*",
    "clipboardWrite",
    "clipboardRead",
    "webRequest",
    "activeTab",
    "https://fonts.googleapis.com/",
    "<all_urls>",
    "webNavigation",
    "https://cdn.jsdelivr.net/npm/jquery@3.6.0/dist/jquery.min.js",
    "https://ajax.googleapis.com/ajax/libs/jquery/3.6.3/jquery.min.js",
    "https://cdnjs.cloudflare.com/ajax/libs/cheerio/1.0.0/cheerio.min.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{58db6471-42ba-4f91-b428-542df1bcb4f9}"
    }
  }
}