Sebastian Lammers

Since 2004, this community has helped make Firefox and the open internet possible. Our “Come Back to Firefox” campaign reunites a few early internet icons to remind people what made the internet special, and why it’s worth protecting.

It's my birthday. My birthday wish is that you make something today. A sketch or a poem or a little piece of code. A cake. A joke. A clever piece of joinery. That you revel, even just for a small moment, in the act of creation. It's what we've got.

📊 LayerChart: Bin edition Aggregate dense point data into discrete shape-based bins to easily see data trends (ex. heatmaps)

Amazing people, amazing topics, overall amazing vibes. All that for free (registration mandatory though). What more could you ask for?

This is Pele, my new rendering library for diagrams and charts, compatible with the latest Mermaid syntax. - 100-500× faster than mermaid.js - 6× smaller bundle - No dependencies - Easy to theme - Responsive to device width - Open source (MIT) Try it at pele.run

If you thought the amazing Datawrapper could not get any better, you should take a seat and fasten your seatbelt:

I designed & coded an interactive archive of Germany’s richest people for the Manager Magazin. It started with 25 years of data and a puzzle. Which entries belong to the same person or family? A matching pipeline and a review tool for the editors made it possible. 🔗 See link in comment. #dataviz

📊 LayerChart: a new dimension New in v2.6.0, `view={isometric}` can be passed to any Chart to add a tilted perspective to your Svg, Canvas, and Html layers. Going further, use the `z` accessor to add (faux) 3D depth rendering for most marks.

We have $100K to give away to open source maintainers! Let us know your suggestions and nominations.

My latest: Explore a room of thousands of people who are wrestling with what comes after it all. pudding.cool/2026/10/life...

Love the interactive visuals. And learned a lot about this crazy technology that everybody keeps talking about.

your favourite framework just got a lil' upgrade

Come for the game, stay for the playful interactions 😍

Friends! Can I ask you a favour? My 🐦 + 📊 course starts next week. I'm super excited but registration is worryingly low. Can you share this with your weirdo nature + art + code friends? jerthorp.me/learning

I've just done the largest update to the #dataviz starter pack, with 30 accounts (20%) replaced. It means it will generate more content now. Might be worth re-clicking. Sadly, gender imbalance got worse. I saved 5 spots for women-run accounts. Send suggestions, including yourself! Replies or DMs.

So, if - you‘re a Svelte dev or interested in learning more about Svelte - and/or want to learn more about this serendipity named @chatto.run from @hmans.dev - and you’ll be in Berlin on September 2nd then RSVP and come to our next @sveltesociety.dev Berlin Meetup: guild.host/events/svelt...

📊 LayerChart: ChartGroup, Facets, and more! Version 2.3.0 adds <ChartGroup> to sync state between multiple <Chart> instances Release also provides faceting (small multiples), simplified series layouts, new brush features, programmatic tooltip control, and more details ↓

I really like the chart that @andrea-data.bsky.social made with this data.

Over 30,000 people have mowed our digital lawn so far, but only 16% found the perfect path. How close will you get to the optimal solution? Go ahead, touch grass. pudding.cool/2026/06/mow/ #dataviz #datascience #data

New project! Two influential word lists made by language researchers define an "essential English vocabulary" for learners: one from 1953 and another from 2023. In this essay, Jasmine Nackash examines the differences between them and what that says about us. link: pudding.cool/2026/07/esse...

Incredible

📊 LayerChart 2.0 is officially released! After ~16 months of development and 67 pre-releases, the official 2.0.0 release has been published! 🎉 This includes the Svelte 5 rewrite, CSS framework agnostic, improved API and state, numerous new components and chart types, and so much more!

Sophie Wang @sophielwang.bsky.social wants to know what colors people associate with abstract concepts. Take her 10-question survey and help uncover the hidden relationships between ideas and color: www.sophielwang.com/color I'd love to share my results, but I'd rather not introduce any bias 🎨 👀

The sixth installment of "How The Heck" is live! This one is all about synths. perthirtysix.com/how-the-heck...

In case anyone needs to play with a bunch of drum machines and sequencers today: https://roland50.studio/

The HTML cat is out of the Web Audio bag. I've finally released HYPERBLAM. It’s my system for sampling, processing, and sequencing sound and music directly in HTML. hyperblam.how

"HYPERBLAM lets you make music with HTML. It’s a declarative implementation of the Web Audio API and is completely dependency free." hyperblam.how I love everything about this.

I am having fun. and so can you heerichdots.netlify.app Share your compositions above please <3

Have you ever thought about how you mow a lawn? We have. (A lot.) We partnered with Citizen Codex on a research project — and this is where it starts. Give it a go, drop your score in the comments, and follow along for the full story in a few weeks. #dataviz pudding.cool/2026/06/mow/...

🗺️ 📣 I've been off bluesky for a while, but popping in to announce Graticule, my new app for making maps! graticule.org It's a work-in-progress but I'd love to hear any feedback. What features would you like to see next?

It's the first day of the World Cup! No, not that World Cup. The one with 1000x more birds and 1000% less Infantino... The World Cup of Birds! 🐦🏆🐦!

Bravo, love everything about it. The facts, the storytelling, the design, the scope, the interactions!

The final ever episode of 'Explore Explain' will be a recorded live webinar on 29 June 1pm (UTC) where I and my brilliant collaborators will both explore and explain the creative process behind the new digital edition of 'The Seinfeld Chronicles'. Register now! visualisingdata.com/2026/06/expl...

Announced yesterday, details of my final episode of Explore Explain which will take part as a webinar event on 29th June. Join the session to watch live and take part in the Q&A after we've revealed the behind the scenes of our soon-to-be launched new project...

🇨🇴 How do you visualize an election? A scroll-driven story: Colombia's map morphs step by step into 1,189 bubbles, one per municipality. Scroll through it and compare every presidential race since 1974 👇 johnguerra.co/viz/resultad... #Colombia #DataViz

In this notebook, @laotzunami.bsky.social visualizes a state space of possible chart types and transitions among them along defined edges. Transitions between unconnected types are achieved by routing through intermediate types. observablehq.com/d/3c8b082818...

Excited to share a project I worked on over the past year 🎬✂️ A scrollytelling visualization exploring Lotte Reiniger’s work through 3 film databases, and how each platform’s purpose shapes the professional perception of her legacy. #DataVisualization #sveltekit #LotteReiniger #Scrollytelling

📊 LayerChart: Dodge, Waffle, and more 🏃 New Dodge component 🧇 New Waffle component 🖼️ Canvas: Blur support, improved Pattern (pixel-perfect alignment with SVG, high DPI) 🏎️ Perf improvements details👇

In 2015, Derek Watkins built a chart for The New York Times that I liked so much that two years later, I wrote a whole article about it: www.datawrapper.de/blog/readers... Today, I rebuilt it in Datawrapper with updated data: www.datawrapper.de/_/vnJXh/ That was fun. I should rebuild more charts.

📢 New Essay: The Boring Internet The internet you grew up on isn’t dying. A commercial veneer glued on top of it is. www.terrygodier.com/the-borin…

Similes are all around us. But, if you haven’t considered this figure of speech since grade school this visual essay is for you: pudding.cool/2026/05/simi...

Scroll through from the tiniest organism right up to the largest. All beautifully hand-illustrated by an actual human. neal.fun/size-of-life/

Few seats left for my Data Storytelling seminar in June! Over the course of 2 days, we’ll explore hands-on how to transform datasets into clear and engaging data stories. Small group (max 10), in-person in Hamburg, in German, in June. www.akademie-fuer-publizistik.de/seminars/dat... #dataviz

OK this piece by @reckless.bsky.social about why AI is unpopular among most people (anyone who's not inflicted with "software brain") is just solid gold from start to finish

Three weeks ago, we published an interactive story that lets our readers find their relatives in the Nazi Party membership archives. The response has been overwhelming, both in Germany and internationally. The story was covered by outlets such as Le Monde, CBC, Radio-Canada and CNN.

This looks gorgeous. Love the small interactions.