kkpan11 / protomaps.js

Lightweight vector map rendering, labeling and symbology for the web

protomaps-leaflet

Vector tile rendering and labeling for Leaflet.

This project is a complete web map renderer - including quality label layout, pattern fills, and icons - in as simple as possible of an implementation. It's an alternative to renderers like MapLibre GL JS in a fraction of the size.

Features

• Render interactive slippy maps with Leaflet integration
• Supports variable web fonts with multiple weights and italics in a single font file
• Can read normal Z/X/Y tile URLs or offline, static-hosted tile archives in PMTiles format
• Full out-of-the-box support for right-to-left and Indic/Brahmic writing systems
• Configurable via plain JavaScript
• Extensible API for defining your own symbolizers

See the docs on what protomaps-leaflet is, what protomaps-leaflet is not

Demos

• Simple Leaflet demo
• "Toner" black-and-white style
• Multi-language customization
• Satellite + labels demo
• GeoJSON between basemap and labels demo
• Map inset
• PostGIS
• Custom fonts

How to use

<script src="https://unpkg.com/protomaps-leaflet@latest/dist/protomaps-leaflet.min.js"></script>
<script>
    const map = L.map('map')
    var layer = protomapsL.leafletLayer({url:'FILE.pmtiles OR ENDPOINT/{z}/{x}/{y}.pbf'})
    layer.addTo(map)
</script>

Exports of OpenStreetMap data in PMTiles format can be obtained from https://protomaps.com/bundles.

Project Status

The design is still evolving rapidly, so do not expect any kind of stable internal or external-facing API between minor versions. But please do report bugs and discuss requirements in the Issues.

See Also

• KothicJS
• Tangram