Protomaps

cool use of PMTiles with non-geographic data!

Mapbox GL JS v3.21.0 github.com/mapbox/mapbo... "Add first-class support for PMTiles via the new TileProvider API and an official plugin (``mapbox-gl-pmtiles-provider.js`) that loads on demand."

Using Firefox + PMTiles hosted on Github Pages seems to have been fixed finally github.com/protomaps/PM...

🌎 𝗙𝗶𝗿𝘀𝘁 𝗣𝗠𝗧𝗶𝗹𝗲𝘀 𝗠𝗮𝗽, taught with Jon Schleuss, will show how to display a massive dataset on an interactive map using Protomaps and MapLibre. https://schedules.ire.org/nicar-2026/#/session/1303

Today we’re launching Open Climate Risk, a fully open option for U.S. building-level climate risk data. It’s unique because it allows you to see not only risk scores, starting with wildfire, but also the complete underlying dataset, methods, and codebase. carbonplan.org/research/cli...

Two things that have been keeping me busy lately: a slate of changes to @planscore.org for this year’s surprise midcycle redistricting environment, and a collection of contributions to @protomaps.com base maps including support for @overturemaps.bsky.social data. medium.com/@michalmigur...

Cyprus, Greenland, Faroe, Iceland, Japan, New Zealand, Norway, Svalbard, Portugal, Madeira, Spain, England, Scotland, Wales, and the United States are now included in Mapterhorn v0.0.7. Special thanks to Daniel Silk (NZ), Hidenori Fujimura (JP), and Christopher Varjas (US)!

If you work in geospatial, PMTiles is one of the technologies you need to know going into 2026. This past year, I wrote an R package to help you get started. Learn how here:

people kept asking for pmtiles merge, now there is pmtiles merge, inevitably they will ask why it refuses to work for overlapping inputs, here is why merging tilesets is hard (blog post): protomaps.com/blog/pmtiles...

new pmtiles CLI feature (the most requested one) pmtiles merge input input output docs.protomaps.com/pmtiles/cli#... download new version here: github.com/protomaps/go...

SFO Airport Museum's map viewer is powered by a raster pmtiles archive + leaflet millsfield.sfomuseum.org/map/#2025/fg/

Nice work and good to see @protomaps.com finding adoption in major news outlets!

What would happen if the Amazon rainforest collapsed? Our look at deforestation and feedback loops. Also, the perfect occasion to make use of our new MapLibre/Protomaps scroller component. #maps #dataviz #ddj www.spiegel.de/wissenschaft...

Flix Bus in US powered by @protomaps.com and @openstreetmap.bsky.social I love when apps clearly attribute their map source.

I'll also share some latest developments using @protomaps.com and @maplibre.org to self-host vector maps with custom layers, beautiful rendering and seamless zoom, in case you are interested in that type of thing 🗺️

The #protomaps project recently reached its goal of 50+ GitHub Sponsors! Becoming a sponsor allows commercial use of the hosted API: protomaps.com/api and supports the compute and storage for free daily planet builds: maps.protomaps.com/builds/ GitHub Sponsors: github.com/sponsors/pro...

New blog post on @mapterhorn.com - terrain for web mapping protomaps.com/blog/mapterh...

mapgl for #rstats supports @protomaps.com PMTiles as a data source in both @maplibre.org and @mapbox.com maps. If you need to visualize large datasets but struggle with hosting / infrastructure requirements, PMTiles may be exactly what you need.

Have you been waiting for "Protomaps Terrain"? It's arriving! @mapterhorn.com is an independent project created by @oliverwipfli.ch - a global elevation model built from multiple sources, distributed as a single PMTiles archive

Great to see protomaps go from strength to strength with handy open source viewer. www.youtube.com/watch?v=4Qn3...

A very manual @protomaps.com to print pipeline. Always excited to get something in print 🗞️ www.nytimes.com/interactive/...

Added a section to the PMTiles docs on fast uploading to @source.coop using only the pmtiles single binary CLI: docs.protomaps.com/pmtiles/clou... Easier to install than awscli or rclone - just bring your repo credentials!

I'd like to give a big thanks to @protomaps.com for their fantastic work. Our open source Android port of Soundscape, the navigation and exploration app for visually impaired uses a protomaps server and it's reduced the cost to the supporting charities by a huge amount. github.com/Scottish-Tec...

There's an ongoing issue preventing PMTiles hosted on GitHub Pages from being loaded correctly in Firefox Issue: github.com/protomaps/PM... Minimal Reproduction using raw fetch and plain files: github.com/bdon/ghpages... Work at @github.com or know someone who does?

🗺️ La prévisualisation des fichiers PMTiles et GeoJSON est désormais disponible sur la plateforme ! #geo Et bientôt d’autres formats (flux WMS et WFS, CSV contenant des données géographiques) grâce aux communs numériques de cartes.gouv.fr (IGN). En savoir plus : www.data.gouv.fr/fr/posts/pre...

My first @protomaps.com Faults, earthquakes, Alquist-Priolo fault zones, landslides, custom shaded relief, and a base layer. Just the East Bay for now. 🗺️

Where tiles come from

PMTiles for... biology! blog.latch.bio/p/a-universa...

Possibly the first PMTiles appearance on the NYT front page?!

protomaps.com/blog/new-pmt...

Shane @carbonplan.org Comparing performance between single GeoParquet, quadkey partitioned GeoParquet, FlatGeobuf, and PMTiles #cngconference

New rewrite of pmtiles.io going online soon you can try it at beta.pmtiles.io feedback link in nav bar!

🗺️ Join our 1-hour workshop Understanding Protomaps with NYT’s John Keefe and learn how to build open-source, sustainable maps for your newsroom—no third-party tools needed. 💻 📅 April 22 | 💵 $40 🎟️ Register now: https://bit.ly/3RDRHKu

Join our 1-hour workshop on Understanding Protomaps and learn how to create sustainable, interactive maps for your newsroom! 💻 📅 When: April 22 | 5 p.m. ET / 4 p.m. CT 💵 Cost: $40 (includes lifetime access, certificate & tipsheet) 🎟️ Register now: https://bit.ly/3RDRHKu

Leaflet 0.8-dev from 10 years ago with a high performance @protomaps.com basemap canvas renderer from 2025? Yes it works 😅 So if you have legacy systems running where you don't have the resources to upgrade you can still replace costly raster tile APIs. github.com/do-me/leafle...

Enjoyed being on @jeremyjung.com's Software Sessions podcast! Topics: * Maps as a primitive of the web * The appeal of static sites * @protomaps.com vs. OSM * Dynamics + biz of FOSS vs. SaaS * Thinking about "finishing" projects Listen + read transcript at www.softwaresessions.com/episodes/pro...

Little inset guy to show the eclipse extent in context

Some recent maps built with @maplibre.org @protomaps.com

The base map on https://openinframap.org has been updated and is now using the Protomaps basemap schema: https://docs.protomaps.com/basemaps/downloads The style has also been extensively tweaked, and it looks a bit more colourful at lower zooms - thoughts/feedback welcome!

The latest release of the {mapgl} #rstats package supports @protomaps.com PMTiles in @maplibre.org! Try it out with the sample PMTiles dataset over MapLibre's new globe projection: Code: gist.github.com/walkerke/cf8...

try out a new Rasterio plugin for converting GeoTIFF to PMTiles: pip install rio-pmtiles github.com/protomaps/PM...

protomaps is for lovers

New example program for generating the minimum viable PMTiles, a single PNG: github.com/protomaps/go...

My hot take: Humanities folks should learn about the many interactive mapping platforms that are NOT ArcGIS. I have seen way too many people claim that their maps would be something different if it weren't for the technical limits, but those limits DO NOT EXIST in the Javascript mapping world.

Dan Snow created a beautiful website, opentimes.org. I love the minimal design, how immediately functional it is, and it even uses OpenFreeMap! At the bottom of the About page, I found: "I was inspired by the OpenFreeMap project and wanted to use my own domain knowledge to do something similar."

I also was able to quickly build a spanish version thanks to the #naturalearthdata powering the labelling in the basemap @protomaps.com @maplibre.org

Choosing colours for cloud cover percentage wasn't easy, but happy with how this monochrome version turned out for the recent lunar eclipse – direct labels seemed to help www.nytimes.com/2025/03/13/s...

@maplibre.org and @protomaps.com (plus their supporting ecosystem of tools) are cool as hell and an amazing toolset for building maps in a newsroom. If you haven't played around with 'em yet, you should!

If anyone is interested in pmtiles (#protomaps) self-hosted map tile cost comparisons between Cloudflare R2 and AWS S3 and AWS S3 + Cloudfront, here is what we experienced: R2: $1.67/mo S3: $4.87/mo S3 + Cloudfront: $5.49 (but we also added 3 addt'l 5-gb buckets)