Its a fun challenge. I used https://squoosh.app https://squoosh.app to make a pretty good one. Mostly just a resize and then OxiPNG for compression. Managed a

Its a fun challenge. I used https://squoosh.app https://squoosh.app to make a pretty good one. Mostly just a resize and then OxiPNG for compression. Managed a 124x62 black/white image. OP has a resolution of 195x53, so I had very similar, but slightly worse i think? mostly a different aspect ratio + map projection i think. playing with Squoosh.app is very fun, and you can very easily see how the jump from 500b to 1-2kb turns a map from "awful" to "very good" with the right settings.