Examine source code of Telegram Downloader

{
  "action": {
    "default_popup": "popup/payment.html"
  },
  "content_scripts": [
    {
      "js": [
        "content/content.js"
      ],
      "matches": [
        "https://web.telegram.org/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "td@sprise.ltd"
    }
  },
  "description": "Telegram Downloader downloads images and videos with one click",
  "host_permissions": [
    "https://web.telegram.org/*",
    "https://sprise-api.xyz/*"
  ],
  "icons": {
    "16": "assets/logo.png",
    "48": "assets/logo.png",
    "128": "assets/logo.png"
  },
  "manifest_version": 3,
  "name": "Telegram Downloader",
  "permissions": [
    "storage"
  ],
  "version": "1.0"
}