Examine source code of Lumen — NewTab

{
  "manifest_version": 3,
  "name": "Lumen — NewTab",
  "version": "2.5.0",
  "description": "Page Nouvel onglet personnalisable : fonds animés, horloge, météo, citations, liens et tâches. Sans pub ni traceur, en 10 langues.",
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4f85eb76-42a0-446e-84f2-13e22d1ef0b4}",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}