Whereas MBTiles specification supports only one projection (Web Mercator EPSG:3857), we are able to encode and display vector tiles in any other coordinate system that is suitable for your project. You can display these custom tilesets in common viewers such as Mapbox GL JS or OpenLayers.

You do not lose any performance comparing to displaying the same tileset encoded in Web Mercator. Look at some screenshots of OpenStreetMap vector tiles in national coordinate systems available below.

If you have any specific request, please

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Custom CRS Switzerland
Custom CRS Switzerland
Custom CRS Switzerland
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OpenMapTiles.org is an open-source project from Klokan Technologies GmbH and OSM community
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