chromium/chrome/test/data/banners/manifest_large_screenshot.json

{
    "name": "PWA Large Screenshot",
    "description": "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua",
    "screenshots": [
      {
        "src": "screenshot2_large.jpeg",
        "type": "image/jpeg",
        "sizes": "4000x3927",
        "form_factor": "wide"
      },
      {
        "src": "screenshot2.jpeg",
        "type": "image/jpeg",
        "sizes": "551x541",
        "form_factor": "wide"
      },
      {
        "src": "screenshot2-portrait-large.jpeg",
        "type": "image/jpeg",
        "sizes": "3927x4000",
        "form_factor": "narrow"
      },
      {
        "src": "screenshot2-portrait.jpeg",
        "type": "image/jpeg",
        "sizes": "541x551",
        "form_factor": "narrow"
      }
    ],
    "scope": ".",
    "start_url": "manifest_test_page.html",
    "display": "standalone"
  }