manifest.json

{
  "name": "Task List webapp",
  "short_name": "TaskList",
  "description": "Manage your task list.",
  "categories": ["business", "productivity", "utilities"],
  "start_url": "./index.html",
  "scope": "./index.html",
  "display": "standalone",
  "orientation": "any",
  "background_color": "#333",
  "theme_color": "#06c",
  "icons": [{
    "src": "img/icon16.png",
    "sizes": "16x16",
    "type": "image/png"
  }, {
    "src": "img/icon32.png",
    "sizes": "32x32",
    "type": "image/png"
  }, {
    "src": "img/icon180.png",
    "sizes": "180x180",
    "type": "image/png"
  }, {
    "src": "img/icon192.png",
    "sizes": "192x192",
    "type": "image/png"
  }, {
    "src": "img/icon512.png",
    "sizes": "512x512",
    "type": "image/png"
  }],
  "screenshots": [{
    "src": "screenshots/dark.png",
    "sizes": "550x600"
  }, {
    "src": "screenshots/light.png",
    "sizes": "550x600"
  }]
}