Example: https://icogen.vercel.app/api/icon?color=white&padding=300&icon_id=1f1f1-1f1fa

Can be used in Expo apps via app.json:

{
  "expo": {
    "icon": "https://icogen.vercel.app/api/icon",
    "splash": {
      "image": "https://icogen.vercel.app/api/splash",
      "resizeMode": "cover"
    }
  }
}

Expo CLI will automatically fetch/resize/covert for each platform.

Query Param	Description	Example
width	width of image	300
height	height of image	300
color_hex	hex value for the background image	fff000
icon_id	raw emoji or emoji unicode for the icon	🥓
padding	padding to apply to around the emoji	30
color	CSS color name to use for background image	dodgerblue
auto_color_style	A weird prop that makes an emoji fill the canvas, good for faces like 😀	flood

Why Not This Endpoint!

Probably full of bugs, feel free to PR, fork, redeploy, etc.