# Leaflet/Leaflet.heat

A tiny, simple and fast heatmap plugin for Leaflet.

Repository: https://github.com/Leaflet/Leaflet.heat
Canonical: https://ross.abutalabs.com/products/leafletheat
Homepage: http://leaflet.github.io/Leaflet.heat/demo
Language: JavaScript
License: BSD-2-Clause
License Family: permissive
Last push: 2024-06-28T14:48:50+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4597, "days_push": 796, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1654, forks 524 (observed 2026-08-28T04:05:17.756355+00:00)

## What it is
A tiny, fast heatmap plugin for the Leaflet mapping library, built on simpleheat with grid clustering for performance. It renders point intensity data as a customizable canvas heatmap layer on interactive maps.

## Use cases
- visualize point density on a Leaflet map as a heatmap
- show intensity of events like crime or sightings geographically
- render 10,000+ points smoothly on a web map
- customize heatmap colors, radius, and blur
- dynamically add points to a live heatmap

## When to choose
- you already use Leaflet and need a lightweight heatmap layer
- you need fast rendering of many points in the browser
- you want simple options for gradient, radius, and intensity

## When to avoid
- you need a full-featured GIS analysis tool rather than visualization
- you use Mapbox GL or another non-Leaflet mapping stack
- you need server-side heatmap generation

## Facets
- artifact type: plugin
- maturity: maintenance
- function: data-visualization, graphics
- domain: data-visualization, web-development
- platform: browser
- tags: leaflet, heatmap, gis, canvas, maps, javascript

## Member repositories
- Leaflet/Leaflet.heat (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:17.756355+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 2026-08-30T03:44:54.669521+00:00, confidence not recorded.
  - readme: https://github.com/Leaflet/Leaflet.heat (fetched 2026-08-28T04:05:17.756355+00:00, sha 9476e03d7e9e)
  - homepage: http://leaflet.github.io/Leaflet.heat/demo (fetched 2026-08-29T11:17:59.995660+00:00, sha 526e523bb79d)
  - registry_npm: https://registry.npmjs.org/leaflet.heat (fetched 2026-08-29T11:17:59.998662+00:00, sha e3ae526ac5df)
- Data as of 2026-08-30T08:39:29.467469+00:00.