Examine source code of Pixel Tab

{
  "name": "Pixel Tab",
  "version": "1.1",
  "description": "Put some pixels in that new tab of yours!",
  "manifest_version": 3,
  "icons": {
    "16": "assets/icon-16.png",
    "32": "assets/icon-32.png",
    "48": "assets/icon-48.png",
    "128": "assets/icon-128.png"
  },
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "pixeltab@dotalek.dev",
      "strict_min_version": "54.0"
    }
  }
}