app/assets/favicons/manifest.json.erb

   1 {
   2         "name": "OpenStreetMap",
   3         "short_name": "OSM",
   4         "icons": <%= [36, 48, 72, 96, 144, 192].map { |res| {
   5                         src: image_path("android-chrome-#{res}x#{res}.png").gsub("/", "\\/"),
   6                         sizes: "#{res}x#{res}",
   7                         type: "image/png",
   8                         density: res.to_f / 48
   9                 } }.to_json %>,
  10         "start_url": "/",
  11         "theme_color": "#7ebc6f",
  12         "background_color": "#fff",
  13         "display": "minimal-ui"
  14 }