Examine source code of Telegram Video Downloader - ExtStack

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "version": "1.0.0",
  "description": "__MSG_extensionDescription__",
  "default_locale": "en_US",
  "browser_specific_settings": {
    "gecko": {
      "id": "telegram-video-downloader@extstack.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "activeTab",
    "downloads",
    "alarms",
    "https://web.telegram.org/*",
    "https://extensionpay.com/*"
  ],
  "icons": {
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "background": {
    "page": "background.html",
    "persistent": false
  },
  "sidebar_action": {
    "default_panel": "sidepanel.html",
    "default_title": "__MSG_extensionActionTitle__",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "browser_action": {
    "default_title": "__MSG_extensionActionTitle__",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://web.telegram.org/*"
      ],
      "js": [
        "content_tg.js"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "https://extensionpay.com/*"
      ],
      "js": [
        "lib/ExtPay.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    "sidepanel.html",
    "icons/*",
    "js/tel_inject.js",
    "sidepanel.js"
  ]
}