Examine source code of Copy HTML with CSS

{
  "name": "Copy HTML with CSS",
  "description": "Adds a DevTools Elements sidebar that lets you copy the selected element's HTML along with its computed CSS as inline styles.",
  "version": "1.2.0",
  "manifest_version": 3,
  "devtools_page": "index.html",
  "browser_specific_settings": {
    "gecko": {
      "id": "{fd97e852-1b44-4bbd-970a-2cc6098b2526}",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "description": "This extension does not collect any user data."
      }
    }
  }
}