{
  "name": "How to Spell Numbers",
  "short_name": "Spell Numbers",
  "description": "Learn how to spell numbers in English — with audio, practice, and quizzes. Free.",
  "start_url": "/",
  "scope": "/",
  "display": "standalone",
  "orientation": "portrait",
  "theme_color": "#ffffff",
  "background_color": "#ffffff",
  "lang": "en-US",
  "categories": ["education", "kids", "utilities"],
  "icons": [
    { "src": "/images/icon-192.png",          "sizes": "192x192", "type": "image/png", "purpose": "any" },
    { "src": "/images/icon-512.png",          "sizes": "512x512", "type": "image/png", "purpose": "any" },
    { "src": "/images/icon-512-maskable.png", "sizes": "512x512", "type": "image/png", "purpose": "maskable" }
  ]
}