Examine source code of Humble New Tab Page

{
  "name": "HNTP",
  "short_name": "HNTP",
  "version": "1.26.2",
  "manifest_version": 3,
  "browser_specific_settings": {
    "gecko": {
      "id": "{bb9cfae3-9ac6-4c72-b90b-71814ab7d789}",
      "strict_min_version": "108.0"
    }
  },
  "description": "Redesigned new tab page featuring your bookmarks, apps, most visited, and recently closed in a custom layout.",
  "icons": {
    "16": "icons/icon_16.png",
    "48": "icons/icon_48.png",
    "128": "icons/icon_128.png"
  },
  "permissions": [
    "bookmarks",
    "topSites",
    "tabs",
    "sessions"
  ],
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "chrome_settings_overrides": {
    "homepage": "newtab.html"
  },
  "options_ui": {
    "page": "newtab.html?options",
    "open_in_tab": true
  }
}