# openstreetmap-carto/openstreetmap-carto

A general-purpose OpenStreetMap mapnik style, in CartoCSS

Repository: https://github.com/openstreetmap-carto/openstreetmap-carto
Canonical: https://ross.abutalabs.com/products/openstreetmap-carto
Language: CartoCSS
License: NOASSERTION
License Family: other
Last push: 2026-08-25T17:02:04+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 5039, "days_push": 8, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1728, forks 885 (observed 2026-08-28T04:05:28.372774+00:00)

## What it is
The official CartoCSS stylesheets powering the standard OpenStreetMap.org map layer, rendered with Mapnik. It is a general-purpose, customizable map style designed for use with Kosmtik or the CartoCSS command-line processor against a PostGIS database of OSM data.

## Use cases
- render the standard openstreetmap.org basemap style on my own tile server
- customize the default OSM map style for my project
- set up a self-hosted mapnik tile server with the OSM standard look
- learn cartographic design with cartocss stylesheets
- style openstreetmap data loaded into postgis
- fork the OSM standard style to change colors and feature rendering

## When to choose
- you want the canonical OpenStreetMap standard map appearance on your own tileservers
- you need a well-maintained, actively updated general-purpose OSM CartoCSS style
- you want a documented, customizable starting point for OSM cartography with Kosmtik or carto

## When to avoid
- you need a style for rendering engines other than Mapnik (e.g. Mapbox GL vector styles)
- you want a highly stylized or minimalist basemap rather than the standard OSM design
- you cannot run a PostGIS database loaded with OpenStreetMap data

## Facets
- artifact type: application
- maturity: active
- function: graphics, developer-tools
- domain: web-development, graphics
- platform: cross-platform, python
- tags: cartocss, mapnik, openstreetmap, map-styling, cartography, gis, postgis, maps, nodejs

## Member repositories
- openstreetmap-carto/openstreetmap-carto (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:28.372774+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:32:14.191555+00:00, confidence not recorded.
  - readme: https://github.com/openstreetmap-carto/openstreetmap-carto (fetched 2026-08-28T04:05:28.372774+00:00, sha bee93da174eb)
- Data as of 2026-08-30T08:39:29.467469+00:00.