Examine source code of XMedia Saver

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "version": "1.0.6.1",
  "description": "__MSG_extensionDescription__",
  "icons": {
    "96": "icons/icon-96.png"
  },
  "browser_action": {
    "default_icon": "icons/icon-96.png",
    "default_title": "__MSG_extensionName__",
    "default_popup": "popup/popup.html"
  },
  "permissions": [
    "contextMenus",
    "downloads",
    "clipboardWrite",
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "https://x.com/*"
      ],
      "js": [
        "twitter_improvements.js"
      ],
      "css": [
        "twitter_improvements.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "options_ui": {
    "page": "settings/settings.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{49f6325f-921e-5ff1-324d-a26f25ad1234}"
    }
  }
}