Protomaps – A serverless system for planet-scale maps
protomaps.com
protomaps.com
1. They have a great [1] tool that allows you to draw a polygon and generate a pmtiles file for only a particular region. It requires a free account to actually download the pmtiles file, sometimes the download button appears a bit late, but be patient.
2. Then they have a MapLibre example here of how to use the pmtiles file to render it on browser: https://protomaps.github.io/basemaps/
Once you know these details it's a nice tool.
Another really awesome tool that is used a lot with protomaps is Tippecanoe.
https://felt.com/blog/erica-fischer-tippecanoe-at-felt
Excited that active development is started again