# mapbox/geojson-vt

Slice GeoJSON into vector tiles on the fly in the browser

Repository: https://github.com/mapbox/geojson-vt
Canonical: https://ross.abutalabs.com/products/geojson-vt
Language: JavaScript
License: ISC
License Family: permissive
Last push: 2026-07-02T09:09:20+00:00

## Health v2 (maintenance only)
Score: 79/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 90, release rhythm 52, longevity 100
- inputs: {"age_days": 4291, "days_push": 62, "days_rel": 111, "gap_med": null, "n_releases_24m": 1}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2041, forks 280 (observed 2026-08-28T04:06:08.511292+00:00)

## What it is
A fast JavaScript library that slices GeoJSON data into vector tiles on the fly, without needing a server. It powers GeoJSON rendering in Mapbox GL JS and works with other mapping platforms like Leaflet, OpenLayers, and d3.

## Use cases
- render large GeoJSON datasets in the browser without a server
- slice GeoJSON into vector tiles on the fly
- display millions of points on an interactive map
- use GeoJSON data with Mapbox GL JS, Leaflet, or OpenLayers
- simplify geospatial data per zoom level for fast rendering
- generate vector tiles in a Node.js server application

## When to choose
- you need to render large GeoJSON files client-side with good performance
- you want vector tiles without running a tiling server
- you use Mapbox GL JS, Leaflet, OpenLayers, or d3 and need GeoJSON support
- you need zoom-level-appropriate simplification of geospatial features

## When to avoid
- you need pre-generated static tile caches for production serving at scale
- you work with raster imagery rather than vector GeoJSON data
- you need a non-JavaScript environment without access to the C++ port

## Facets
- artifact type: library
- maturity: stable
- function: geospatial, data-visualization, parser
- domain: web-development, data-visualization
- platform: browser, cross-platform
- tags: geo, vector-tiles, mapbox, leaflet, openlayers, client-side-tiling, maps, geospatial, nodejs

## Member repositories
- mapbox/geojson-vt (main) score 79

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:08.511292+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 2026-08-30T02:58:20.451110+00:00, confidence not recorded.
  - readme: https://github.com/mapbox/geojson-vt (fetched 2026-08-28T04:06:08.511292+00:00, sha a2c9cd641122)
  - registry_npm: https://registry.npmjs.org/geojson-vt (fetched 2026-08-29T10:38:31.466308+00:00, sha ae5b12d1affa)
- Data as of 2026-08-30T08:39:29.467469+00:00.