Leaflet.TileLayer.MBTiles

A LeafletJS plugin to load tilesets in .mbtiles format.

Demo

The following demo loads a ~9.6MB .mbtiles file with the "countries" style from the good ol' Tilemill:

http://ivansanchez.gitlab.io/Leaflet.TileLayer.MBTiles/demo/demo.html

Compatibility

LeafletJS 1.0.1 (or newer), sql.js 0.3.2 (or newer), and a web browser that supports:

• Blobs
• URL.createObjectURL()
• fetch API, or use a polyfill
• Uint8Array

Any recent version of Firefox, Chrome or Safari should work without problems. IE10/IE11 should work with a fetch polyfill.

Usage

Include Leaflet in your HTML, like:

<link rel="stylesheet" href="https://unpkg.com/[email protected]/dist/leaflet.css" />
<script src="https://unpkg.com/[email protected]/dist/leaflet.js"></script>

Include the sql.js library, like:

<script src="https://unpkg.com/[email protected]/js/sql.js"></script>

Include Leaflet.TileLayer.MBTiles, like:

<script src="https://unpkg.com/leaflet.tilelayer.mbtiles@latest/Leaflet.TileLayer.MBTiles.js"></script>

Once everything is loaded, you can instantiate L.TileLayer.MBTiles just by providing the URL to a .mbtiles database:

var mb = L.tileLayer.mbTiles('http://server/something/cool-stuff.mbtiles').addTo(map);

Extra metadata handling

Some .mbtiles have metadata rows which is not in the specification .mbtiles format. This plugin will handle the following optional metadata rows, if they exist:

• minzoom (as the layer's minzoom option).
• maxzoom (as the layer's maxzoom option).
• attribution (as the layer's attribution option). Due to the async nature of the code, attribution might not show up properly if the layer is added to the map before its database is loaded.

To work around the asynchronous attribution problem, this might not work very well. Consider handling the metadata manually and setting Leaflet layer options accordingly.

Legalese

"THE BEER-WARE LICENSE": [email protected] wrote this file. As long as you retain this notice you can do whatever you want with this stuff. If we meet some day, and you think this stuff is worth it, you can buy me a beer in return.