Source Manifest.json {"update_url": "https://clients2.google.com/service/update2/crx",\t"manifest_version": 3,\t"name": "Replace NewTab",\t"version": "1.0.1.66",\t"version_name": "0.0.1.66",\t"description": "__MSG_extDescription__",\t"default_locale": "en",\t"icons": {\t\t"128": "/icon/icon_128.png"\t},\t"background": {\t\t"service_worker": "service_worker.js"\t},\t"permissions": [\t\t"storage",\t\t"webRequest"\t],\t"host_permissions": [\t ""\t],\t"chrome_url_overrides" : {\t\t"newtab": "/html/newtab.html"\t},\t"action": {\t\t"default_icon": {\t\t\t"19": "/icon/icon_128.png"\t\t},\t\t"default_title": "set replace URL",\t\t"default_popup": "/html/popup.html"\t}} Read more