Protomaps
Protomaps is a free, customizable map of the world, deployable as a single static file on cloud storage.
Last updated September 2, 2026
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Overview
Protomaps is an open source map that can be deployed as a single static file. It enables frontend developers to self-host maps without server setup, using HTTP range requests. It includes the PMTiles format, a basemap tileset built from OpenStreetMap and other open data sources, and a hosted API for basemap tiles.
History
Protomaps is described as an open source map that is deployable as a single static file. It is built on OpenStreetMap and other open data sources. A key component is the PMTiles format, a general purpose archive specification for tiled data. The Protomaps Basemap is an OSM-derived base layer delivered in PMTiles format for bulk download.
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