go-pmtiles

https://github.com/protomaps/go-pmtiles

Single-file executable tool for creating, reading and uploading PMTiles archives

• convert mbtiles to pmtiles
• extract a region or zoom level from a pmtiles file
• inspect pmtiles files
• serve pmtiles
  • including from cloud storage

reminded of it by this toot:

extracted this multipolygon from a 100GB planet #openstreetmap tileset served over HTTPS:

• zooms 0-15
• 15 million total tiles, ~15GB output
• 1000 HTTP requests
• 4 minutes download (60,000 tiles per second) across the ocean

small extract areas - like this circle around Washington DC - complete in about 15 seconds (30 MB tileset)