Examine source code of New Tab Quote

{
  "manifest_version": 3,
  "name": "New Tab Quote",
  "version": "1.0",
  "description": "Display a random motivational quote every time you open a new tab.",
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "icons": {
    "48": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "new-tab-quote@example.com",
      "strict_min_version": "109.0"
    }
  }
}