todo

fix 'Title Miss Tiny Chef'
fix page scrolls on flipping with space

google search console
firefox image-set
  https://developer.mozilla.org/en-US/docs/Web/CSS/@media/-moz-device-pixel-ratio
  https://developer.mozilla.org/en-US/docs/Web/CSS/resolution
  https://css-tricks.com/snippets/css/retina-display-media-query/
json-ld
safari mobile: add to home screen https://habr.com/ru/company/mailru/blog/450504/
viewer: use webworker
will-change for outside elements
install prompt https://www.pwabuilder.com/feature/Install%20your%20PWA
https://webhint.io/
webp covers
https://rivet.area120.com/
try in safari mobile
print book
other languages
screenshots https://apptoolkit.io/
product hunt
try pwa on windows
android
  com.github.GoogleChrome.custom-tabs-client:customtabs:b42451a68
  compress app