tengl / pmtiles

Cloud-optimized + compressed single-file tile archives for vector and raster maps

🔎 PMTiles Viewer: https://protomaps.github.io/PMTiles/ 🔎

PMTiles

PMTiles is a single-file archive format for tiled data. A PMTiles archive can be hosted on a commodity storage platform such as S3, and enables low-cost, zero-maintenance map applications that are "serverless" - free of a custom tile backend or third party provider.

• Protomaps Blog: Dynamic Maps, Static Storage

• PMTiles Viewer - inspect and preview PMTiles local or remote PMTiles archives.

  • Archives on cloud storage may require CORS for the origin https://protomaps.github.io

• Vector Tiles Example (US Zip Codes)

Demos require MapLibre GL JS v1.15 or later.

See also:

• Cloud Optimized GeoTIFFs

Creating PMTiles

Download the pmtiles binary for your system at go-pmtiles/Releases.

pmtiles convert INPUT.mbtiles OUTPUT.pmtiles
pmtiles upload OUTPUT.mbtiles s3://my-bucket?region=us-west-2 // requires AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY env vars to be set

Consuming PMTiles

JavaScript

See js/README.md and js/examples for usage in Leaflet or MapLibre GL JS.

See openlayers/README.md for usage in OpenLayers.

Go

See the go-pmtiles repository.

Python

See https://github.com/protomaps/PMTiles/tree/main/python/bin for library usage

Serverless

PMTiles on AWS Lambda

PMTiles on Cloudflare Workers

Specification

The current specification version is Version 3.

Recipes

Example of how to create a PMTiles archive from the Census Bureau Zip Code Tabulation Areas Shapefile using tippecanoe and the pmtiles standalone binary:

    # use GDAL/OGR to convert SHP to GeoJSON
    ogr2ogr -t_srs EPSG:4326 cb_2018_us_zcta510_500k.json cb_2018_us_zcta510_500k.shp
    # Creates a layer in the vector tiles named "zcta"
    tippecanoe -zg --projection=EPSG:4326 -o cb_2018_us_zcta510_500k_nolimit.mbtiles -l zcta cb_2018_us_zcta510_500k.json
    pmtiles convert cb_2018_us_zcta510_500k_nolimit.mbtiles cb_2018_us_zcta510_500k.pmtiles

Uploading to Storage

Using the PMTiles command line tool:

pmtiles upload LOCAL.pmtiles "s3://BUCKET_NAME?endpoint=https://example.com&region=region" REMOTE.pmtiles

Using RClone (do rclone config first)

rclone copyto LOCAL.pmtiles r2:/BUCKET/REMOTE.pmtiles --progress --s3-chunk-size=256M --s3-upload-concurrency=2

License

The reference implementations of PMTiles are published under the BSD 3-Clause License. The PMTiles specification itself is public domain, or under a CC0 license where applicable.