Examine source code of Priority - New Tab

{
  "manifest_version": 3,
  "name": "Priority",
  "version": "0.2.0",
  "description": "Productivity extension to focus on your top priority task in new tab page.",
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "priority@meetguns.com",
      "strict_min_version": "109.0"
    }
  }
}