The solar-powered Quarto project is making progress. The pre-render python script to dither and downsize images works :).
Context:
Quarto is a scientific/ technical publishing system. Among other things, it allows you to create static websites from a mixture of R/ Python/ Julia/ ObservableJS and Markdown. I'm trying to create a Quarto setup for a static website with a very minimal footprint to run on a small solar-powered server.