mapnik-geowiki

A renderer using the Mapnik engine for rendering SVG, PDF or pixel image formats. Data is loaded from Overpass API or an OSM file (using geowiki-api), then converted into a GeoJSON with style properties. This is fed into Mapnik using the nik4 application.

Source code

https://github.com/geowiki-net/mapnik-geowiki

Gallery

Some map features created with UMap rendered as SVG

Some map features created with UMap rendered as SVG

A map showing buildings on white background of the center of Graz, Austria. Some buildings are grey (age unknown), most others are colored between blue and magenta.

Old buildings in Graz, Austria

Shows a part of the Ciutat Vella district with black streets and grey buildings.

Barcelona, Example style

Howtos

By plepe , 23 March 2026

Display and render UMap maps

In this howto, I want to show you how to display maps generated with UMap in geowiki-viewer and render them with mapnik-geowiki to a high-quality SVG/PDF file.