Use RealFaviconGenerator to generate these files, put them into your site's static folder:
- android-chrome-192x192.png
- android-chrome-512x512.png
- apple-touch-icon.png
- favicon-16x16.png
- favicon-32x32.png
- favicon.ico
- mstile-150x150.png
- safari-pinned-tab.svg
- site.webmanifest