I made a nicer version of the earth wallpaper script I had a long time ago.
It'll use the compressed 800x800 feed, and turn it into a 1920x1080 wallpaper without watermark

https://git.pixie.town/f0x/earth-wallpaper-api

and hosted version at https://f.0x52.eu/earthwallpaper/himawari-8.png