# Leaflet/Leaflet

🍃 JavaScript library for mobile-friendly interactive maps 🇺🇦

Repository: https://github.com/Leaflet/Leaflet
Canonical: https://ross.abutalabs.com/products/leaflet
Homepage: https://leafletjs.com
Language: JavaScript
License: BSD-2-Clause
License Family: permissive
Topics: javascript, leaflet, maps
Last push: 2026-08-24T12:53:41+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 36, longevity 100
- inputs: {"age_days": 5824, "days_push": 9, "days_rel": 350, "gap_med": 61.0, "n_releases_24m": 3}
- flags: prerelease_only
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 45524, forks 6151 (observed 2026-08-28T04:12:09.578593+00:00)

## What it is
Leaflet is the leading open-source JavaScript library for building lightweight, mobile-friendly interactive maps, weighing about 40 kB gzipped. It provides tile layers, markers, popups, vector overlays, and GeoJSON support with a simple, well-documented API and a large plugin ecosystem.

## Use cases
- embed an interactive map in a web page
- display markers and popups on a map
- render GeoJSON data on a map
- build a mobile-friendly map with pinch-zoom
- overlay OpenStreetMap or WMS tile layers
- visualize geographic points and polygons in a web app

## When to choose
- you need a lightweight, fast interactive map library for web or mobile browsers
- you want broad plugin support and mature documentation
- you need to work with OpenStreetMap tiles or GeoJSON out of the box

## When to avoid
- you need advanced 3D globe rendering or heavy geospatial analysis
- you need a full GIS desktop application
- you require server-side map rendering rather than client-side

## Facets
- artifact type: library
- maturity: stable
- function: ui-components, data-visualization
- domain: web-development, frontend
- platform: browser, cross-platform
- tags: maps, gis, openstreetmap, tile-layers, geojson, interactive-maps, mobile-friendly, geospatial, javascript, mobile

## Member repositories
- Leaflet/Leaflet (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:12:09.578593+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 2026-08-29T16:21:40.542166+00:00, confidence not recorded.
  - readme: https://github.com/Leaflet/Leaflet (fetched 2026-08-28T04:12:09.578593+00:00, sha a3b7fb834030)
  - homepage: https://leafletjs.com (fetched 2026-08-29T07:45:21.774565+00:00, sha 20d092e21813)
  - registry_npm: https://registry.npmjs.org/leaflet (fetched 2026-08-29T07:45:21.791842+00:00, sha df88bd994094)
  - site_page: https://leafletjs.com/reference.html (fetched 2026-08-29T07:45:21.784015+00:00, sha 2f868f674e69)
- Data as of 2026-08-30T08:39:29.467469+00:00.