Single file (not small; 120GB) to contain all tiles, serving which is made efficient using HTTP Range Requests, or as they write in their intro:
Protomaps is an open source system for interactive web maps.
There are three major parts of Protomaps:
- PMTiles, an open archive format for pyramids of tile data, accessible via HTTP Range Requests.
- An ecosystem of tools and libraries for creating, serving and manipulating
- A cartographic “basemap” showing features in the world like roads, water bodies and labels, based on the OpenStreetMap dataset, and delivered as one big PMTiles archive.
Lees meer op de oorspronkelijke bron.