Examine source code of Course Studio

{
  "manifest_version": 2,
  "name": "Course Studio",
  "version": "1.0.0",
  "description": "Create and embed interactive courses from cforj.studio on any website. Access your courses, copy embed code, and insert courses directly on any page.",
  "browser_specific_settings": {
    "gecko": {
      "id": "course-studio@cforj.studio",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "permissions": [
    "activeTab",
    "storage",
    "menus",
    "clipboardWrite"
  ],
  "browser_action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    }
  },
  "background": {
    "scripts": [
      "background/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  }
}