Mapbox vs Leaflet vs MapLibre GL JS (2026)

TL;DR

For web mapping in 2026, start with the rendering model and service requirements. MapLibre GL JS is a community-governed, open-source WebGL renderer that works with multiple map-data providers or self-hosted tiles. Mapbox GL JS is the managed Mapbox option, with tight integration across Mapbox styles and web services and usage-based billing. Leaflet is the simpler, lighter choice for raster basemaps, markers, and vector overlays when you do not need a WebGL style renderer.

Key Takeaways

• Leaflet: 6.67M npm downloads in the latest complete week — about 42KB gzipped and focused on mobile-friendly interactive maps
• Mapbox GL JS: 3.80M npm downloads in the same week — vector maps, 3D features, Mapbox access token, and usage-based billing
• MapLibre GL JS: 4.02M npm downloads in the same week — BSD-3-Clause, community-governed, and not tied to a single tile provider
• MapLibre originated as a fork after Mapbox GL JS moved away from an open-source license in December 2020, but the projects have evolved separately
• Use Leaflet for simple choropleth/marker maps; MapLibre/Mapbox for vector tiles, 3D, custom styles

Download Trends

Downloads are npm's package totals for August 3–9, 2026, not a performance or quality ranking.

The Mapbox → MapLibre Backstory

In December 2020, Mapbox GL JS moved from its open-source 1.x line to a non-open-source license. MapLibre GL JS originated as an open-source fork of that earlier codebase. Its own package documentation now stresses that the projects have evolved substantially since the initial drop-in-replacement period.

Today, the MapLibre Organization operates under its own charter and governance structure. MapLibre GL JS provides:

• Active development beyond the Mapbox 1.x fork
• GPU-accelerated WebGL rendering
• Vector tile support
• 3D terrain and sky rendering
• Protocol handlers for custom tile sources

If you are still using Mapbox GL JS 1.x, compare the migration cost against current Mapbox GL JS and MapLibre rather than assuming either is a drop-in upgrade. For a new build, choose based on renderer features, data/style provider, licensing, support, and measured costs.

Leaflet

Leaflet is the classic JavaScript mapping library. Its official site lists the stable 1.9 line at about 42KB gzipped and supports major desktop and mobile browsers, including IE9–11 for that stable line:

import L from "leaflet"
import "leaflet/dist/leaflet.css"

// Fix default marker icon issue with bundlers:
import markerIcon2x from "leaflet/dist/images/marker-icon-2x.png"
import markerIcon from "leaflet/dist/images/marker-icon.png"
import markerShadow from "leaflet/dist/images/marker-shadow.png"

delete (L.Icon.Default.prototype as any)._getIconUrl
L.Icon.Default.mergeOptions({
  iconUrl: markerIcon,
  iconRetinaUrl: markerIcon2x,
  shadowUrl: markerShadow,
})

// Basic map with OpenStreetMap tiles:
const map = L.map("map").setView([37.7749, -122.4194], 13)

L.tileLayer("https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png", {
  attribution: "© OpenStreetMap contributors",
  maxZoom: 19,
}).addTo(map)

// Add markers:
const marker = L.marker([37.7749, -122.4194])
  .addTo(map)
  .bindPopup("<b>San Francisco</b><br>City by the Bay")

// Add GeoJSON layer (choropleth, polygons):
L.geoJSON(geoJsonData, {
  style: (feature) => ({
    color: "#3388ff",
    weight: 2,
    opacity: 1,
    fillOpacity: 0.3,
    fillColor: getColorByValue(feature?.properties.value),
  }),
  onEachFeature: (feature, layer) => {
    layer.bindPopup(feature.properties.name)
    layer.on("mouseover", () => layer.setStyle({ weight: 3, fillOpacity: 0.5 }))
    layer.on("mouseout", () => layer.resetStyle())
  },
}).addTo(map)

Leaflet with React (react-leaflet):

import { MapContainer, TileLayer, Marker, Popup, GeoJSON } from "react-leaflet"
import "leaflet/dist/leaflet.css"

function LocationMap({ locations }: { locations: Location[] }) {
  return (
    <MapContainer
      center={[37.7749, -122.4194]}
      zoom={13}
      style={{ height: 400, width: "100%" }}
    >
      <TileLayer
        url="https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png"
        attribution="© OpenStreetMap contributors"
      />
      {locations.map((loc) => (
        <Marker key={loc.id} position={[loc.lat, loc.lng]}>
          <Popup>{loc.name}</Popup>
        </Marker>
      ))}
    </MapContainer>
  )
}

Leaflet strengths:

• About 42KB gzipped for the stable build
• No WebGL requirement for its standard raster and SVG/Canvas rendering path
• Broad plugin ecosystem for capabilities such as clustering, routing, and drawing
• Simple, well-documented API
• react-leaflet for React integration

Leaflet limitations:

• No built-in Mapbox-style vector-tile renderer; its standard basemap path uses raster tiles
• No 3D terrain or buildings
• Large or frequently changing datasets require representative performance testing and may benefit from clustering
• No built-in style customization beyond tile URL swap

MapLibre GL JS

MapLibre GL JS renders maps using WebGL — every element is a GPU-accelerated layer:

import * as maplibregl from "maplibre-gl"
import "maplibre-gl/dist/maplibre-gl.css"

// Initialize with MapLibre's public demo style (for examples, not production):
const map = new maplibregl.Map({
  container: "map",
  style: "https://demotiles.maplibre.org/style.json",
  // Or use a self-hosted tile server, Stadia Maps, Maptiler, OpenMapTiles:
  // style: "https://api.maptiler.com/maps/streets-v2/style.json?key=YOUR_KEY",
  center: [-122.4194, 37.7749],
  zoom: 12,
})

// Add a source (vector tiles, GeoJSON, raster, etc.):
map.on("load", () => {
  // GeoJSON source:
  map.addSource("packages", {
    type: "geojson",
    data: {
      type: "FeatureCollection",
      features: packageLocations.map((pkg) => ({
        type: "Feature",
        geometry: { type: "Point", coordinates: [pkg.lng, pkg.lat] },
        properties: { name: pkg.name, downloads: pkg.downloads },
      })),
    },
  })

  // Circle layer:
  map.addLayer({
    id: "package-circles",
    type: "circle",
    source: "packages",
    paint: {
      "circle-radius": ["interpolate", ["linear"], ["get", "downloads"], 0, 4, 10000000, 20],
      "circle-color": [
        "interpolate",
        ["linear"],
        ["get", "downloads"],
        0, "#blue",
        10000000, "#red",
      ],
      "circle-opacity": 0.8,
    },
  })

  // Click handler:
  map.on("click", "package-circles", (e) => {
    const props = e.features?.[0].properties
    new maplibregl.Popup()
      .setLngLat(e.lngLat)
      .setHTML(`<strong>${props?.name}</strong><br>${props?.downloads.toLocaleString()}/week`)
      .addTo(map)
  })
})

MapLibre with React (react-map-gl):

import Map, { Source, Layer, Popup, NavigationControl } from "react-map-gl/maplibre"
import "maplibre-gl/dist/maplibre-gl.css"

const circleLayer = {
  id: "packages",
  type: "circle" as const,
  paint: {
    "circle-radius": 6,
    "circle-color": "#8884d8",
    "circle-opacity": 0.8,
  },
}

function PackageMap({ geoJson }: { geoJson: GeoJSON.FeatureCollection }) {
  const [popupInfo, setPopupInfo] = useState(null)

  return (
    <Map
      initialViewState={{ longitude: -100, latitude: 40, zoom: 3.5 }}
      style={{ width: "100%", height: 400 }}
      mapStyle="https://demotiles.maplibre.org/style.json"
    >
      <NavigationControl />
      <Source type="geojson" data={geoJson}>
        <Layer {...circleLayer} />
      </Source>
    </Map>
  )
}

MapLibre advanced features:

// 3D terrain:
map.addSource("terrain", {
  type: "raster-dem",
  url: "https://api.maptiler.com/tiles/terrain-rgb/tiles.json?key=YOUR_KEY",
  tileSize: 256,
})
map.setTerrain({ source: "terrain", exaggeration: 1.5 })
map.setFog({})  // Add atmospheric haze

// 3D buildings:
map.addLayer({
  id: "3d-buildings",
  source: "composite",
  "source-layer": "building",
  type: "fill-extrusion",
  paint: {
    "fill-extrusion-color": "#aaa",
    "fill-extrusion-height": ["get", "height"],
    "fill-extrusion-base": ["get", "min_height"],
    "fill-extrusion-opacity": 0.6,
  },
})

// Animated data (live tracking):
function updateVehiclePositions(positions: Position[]) {
  const geojson = { type: "FeatureCollection", features: positions.map(toFeature) }
  const source = map.getSource("vehicles") as maplibregl.GeoJSONSource
  source.setData(geojson)  // GPU handles the re-render efficiently
}

Mapbox GL JS

Mapbox GL JS and MapLibre share an ancestor, but current releases have diverged. Mapbox GL JS integrates directly with Mapbox-hosted maps and requires a Mapbox access token:

import mapboxgl from "mapbox-gl"
import "mapbox-gl/dist/mapbox-gl.css"

mapboxgl.accessToken = "pk.eyJ1Ijoi..."  // Required, even for free tier

const map = new mapboxgl.Map({
  container: "map",
  style: "mapbox://styles/mapbox/streets-v12",
  center: [-122.4194, 37.7749],
  zoom: 12,
})

Mapbox-specific advantages:

• Mapbox Studio — visual style editor with curated map styles
• Integrated Mapbox-hosted styles and tiles
• Mapbox Search and Navigation web services
• Mapbox Datasets — manage your own geographic data
• Enterprise SLA and commercial support

When Mapbox is worth the cost:

• You need Mapbox's curated style ecosystem (Mapbox Streets, Satellite, Light, Dark)
• Turn-by-turn navigation with live traffic data
• Geocoding (address search → coordinates) at scale
• Compliance requirements needing SLA and support contracts

Pricing: Mapbox currently includes 50,000 monthly Map Loads for Web at no charge, then applies tiered usage pricing. A map load is counted when a Map object initializes; consult Mapbox's live pricing page before estimating production cost.

Tile and Style Providers (for MapLibre)

MapLibre is a renderer, not a free production basemap service. You can point it at a compatible hosted provider or operate your own tiles. Provider quotas and terms change independently, so check the provider's current documentation rather than choosing from a copied price table.

• MapTiler offers hosted styles, tiles, and APIs.
• Stadia Maps offers hosted raster and vector map products.
• OpenMapTiles documents a self-hosted vector-tile stack.
• Protomaps documents PMTiles-based hosting and clients.

Feature Comparison

When to Use Each

Choose MapLibre if:

• Starting a new project with vector tile or 3D requirements
• You want an open GL renderer without a renderer-level Mapbox token
• Open-source license compliance matters
• You'll host your own tile server or use an alternative provider

Choose Mapbox GL JS if:

• You want Mapbox's visual style editor (Studio)
• You need Mapbox's geocoding, directions, or isochrone APIs
• Commercial support or SLA is required
• Your project already uses Mapbox infrastructure

Choose Leaflet if:

• Simple marker/polygon maps without 3D requirements
• Stable Leaflet 1.9's documented browser range matters more than WebGL features
• You need Leaflet's specific plugin ecosystem (routing, drawing, heatmaps)
• A compact core is important

Ecosystem & Governance

The three projects expose different seams. Leaflet focuses on a small core that can be extended with plugins. MapLibre publishes an open renderer, style specification, examples, and community integrations under the MapLibre Organization's charter. Mapbox combines its renderer with Mapbox Studio, hosted data and styles, and separately priced web services.

For React, react-map-gl publishes separate react-map-gl/maplibre and react-map-gl/mapbox entry points. That separation matters because current MapLibre and Mapbox APIs are related but no longer interchangeable in every detail.

Developer Experience Deep Dive

Leaflet's documentation is a model of clarity. The API is consistent — every layer type follows the same add/remove/bind pattern. TypeScript support is mature via @types/leaflet and react-leaflet's own typings. The main friction points in Leaflet development are the marker icon issue in bundlers (require manually setting icon URLs when using webpack or Vite) and the lack of type-safe style expressions — all styling goes through plain JavaScript objects without type validation.

MapLibre is written in TypeScript and publishes its own types. Its JSON-based style specification enables declarative, data-driven layers, while Leaflet's core API is primarily imperative. The vis.gl project provides React wrappers for both MapLibre and Mapbox, with renderer-specific import paths.

Mapbox's developer experience benefits from years of iteration and commercial investment. The Mapbox GL JS playground in their documentation lets you test code changes live. Mapbox Studio handles the feedback loop for visual style changes without touching code. The Mapbox CLI and dataset management tools round out a complete development workflow.

Performance Testing

Leaflet renders vector paths through SVG or Canvas, while MapLibre and Mapbox render styled map layers through WebGL. That architectural difference can favor the GL renderers for dense, continuously styled data, but feature count alone does not predict frame rate: geometry complexity, clustering, expressions, labels, device GPU, and update frequency all matter.

Do not use a generic marker-count threshold as a benchmark. Test the representative dataset and lowest-supported device, tracking initial load, interaction frame rate, memory, and update latency. Leaflet's official site reports about 42KB gzipped for its stable build; this guide does not publish comparative GL bundle numbers because no current first-party source measures all three under the same build conditions.

Migration Guide

Migrating an older Mapbox GL JS application to MapLibre often starts with familiar source, layer, and camera concepts, but current releases have diverged. Inventory the APIs, style specification features, plugins, and Mapbox-hosted services your application actually uses before treating this as a package swap. A basic migration typically includes:

1. Replace mapbox-gl with maplibre-gl in package.json
2. Replace import mapboxgl from 'mapbox-gl' with import maplibregl from 'maplibre-gl'
3. Remove mapboxgl.accessToken — not required for MapLibre
4. Update the CSS import from mapbox-gl/dist/mapbox-gl.css to maplibre-gl/dist/maplibre-gl.css
5. Replace Mapbox tile URLs (mapbox://styles/...) with an alternative provider (Maptiler, Stadia Maps, etc.)

For current react-map-gl users, change to the documented react-map-gl/maplibre entry point, then verify renderer-specific props and MapLibre's installation requirements against the current react-map-gl migration guidance.

Migrating from Leaflet to MapLibre requires more work because the rendering models and APIs are fundamentally different. Identify the Leaflet features you use—markers, popups, GeoJSON layers, and event handlers—and map them deliberately to MapLibre's source/layer architecture.

Final Verdict 2026

For a new project in 2026, choose MapLibre when you want an open, BSD-3-Clause WebGL renderer and the freedom to select or operate the map-data service. Remember that the renderer's license does not make hosted tiles, fonts, geocoding, or routing free.

Choose Leaflet when simplicity, small core size, raster basemaps, and broad stable-line browser support are the priority. Choose Mapbox when Mapbox Studio, hosted styles/data, web services, or a Mapbox support relationship justify the access-token and usage-billing model.

Methodology

Package versions, licenses, and downloads were checked against the npm registry and npm downloads API on August 13, 2026; download totals use the latest complete week, August 3–9. Rendering, browser, pricing, and integration claims were checked against Leaflet's official site, MapLibre GL JS documentation, Mapbox GL JS documentation, Mapbox pricing, and react-map-gl documentation. Prices and provider quotas can change, so verify them before launch.

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