Niels Leenheer
@html5test.com
CTO of Salonhub. Creator of http://html5test.com, writes at http://nielsleenheer.com, team @FronteersConf, Google Developers Expert, Invite me to speak at your event.
π The Fronteers Dark Mode programme is live! Join us Oct 2nd in Dordrecht π³π± for an evening of talks on HTML, CSS, WebAudio, and APIs: π€ Barry Pollard π€ Anjana Vakil π€ Harry Roberts π€ Cyd Stumpel π€ Heydon Pickering Hosted by Jake Archibald ποΈ β¬99 incl. a 2-course dinner π₯£π₯©ππ₯¬ π fronteersconf.org
Fronteers Dark Mode, Friday, October 2nd, Dordrecht
Join us at Cinema de Witt in Dordrecht for our after work conference.
fronteersconf.org
Just noticed that my Safari bookmarks still have folders for Phonegap, Adobe AIR and Sensha Touchβ¦ Kind of dates me and it shows how often I use bookmarks π
Do you remember how amazing the #SotB26 speakers were? Best believe that next #SotB27 wonβt be any different - amazing speakers and great topics all day! Go ahead and secure your tickets now so you donβt miss out! 2027.stateofthebrowser.com/tickets/
Tickets | State of the Browser
More information and buying options for tickets.
2027.stateofthebrowser.com
If you're an indie dev, contractor, or webdev-adjacent then the @ffconf.org early bird pricing is really for you. They're limited (because we have to balance the budget somehow!) but we still have them: 2026.ffconf.org Four of eight talks announced, check them out and join us in November.
FFConf π UK web conference since 2009
FFConf - the UK's best JavaScript and Web conference in Brighton.
2026.ffconf.org
Really insightful workshop about WebMCP at #GoogleIOConnect - this actually might make a lot of sense to integrate in our appointment booking product. What makes it useful is that agents do not have to use the same flows as people and can answer questions like: βwhen is the next available time?β
Lovely day at #GoogleIOConnect hanging out with all the other GDEβs and Googlers. Interesting sessions so far!
Rowdy Rabouw@rowdy.codes Β· last mo.Enjoying the sessions and food with @html5test.com at #GoogleIOConnect in Berlin. #BuildWithGemini Great to see build-in AI in Chrome getting more traction.
Early bird tickets have been let out the door. Folks have already got theirs. Think of how much cooler the day is going to be on 13th November surrounded by YOUR people, and watching 8 amazing talks. It's an infectious day (in that good way!). Join us: 2026.ffconf.org
You know what's π₯HOTπ₯ today, other than the entire planet, our rooms, our entire bodiesβ¦ :cough: on a brighter note - @ffconf.org early bird π£ tickets just went live. π 2026.ffconf.org
The #cssday photos have been published and they are great. Love them. cssday.nl/2026/pix/pho... But these... These made my day. These were taken during my talk and it makes all of the work I put into it worth it. β€οΈ
Early Bird tickets are now on sale until 31 July or until they are sold out! There arenβt many In-person tickets left for the general sale. Make sure you get yours as soon as possible so you donβt miss out on what promises to be an amazing day. 2027.stateofthebrowser.com/tickets/
Tickets | State of the Browser
More information and buying options for tickets.
2027.stateofthebrowser.com
Not this fall, but the this conference needs to be included as well: State of the Browser organised by @londonwebstandards.org will be back in 2027 on the 6th of March in the Barbican in Londonπ¬π§ I've already got my ticket β just Β£80, which is a steal. ποΈ 2027.stateofthebrowser.com
SotB15 | State of the Browser
Welcome to the fifteenth edition of State of the Browser, a yearly one-day, single-track conference with widely-varying talks about the modern web, accessibility, web standards, and more, organised by...
2027.stateofthebrowser.com
Next: HalfStack is back! November 26th in Viennaπ¦πΉ Another favourite. I am kind of part of the furniture, because this is going to be the 15th time I'm speaking at HalfStack π Tickets are just β¬200 euro and with this code you'll get 20% off: Niels_HSVienna26_Awesome20 ποΈ halfstackconf.com/vienna
HalfStack | Vienna
halfstackconf.com
Next: @ffconf.org in Brightonπ¬π§ This conference has been on my list for more than 10 years. I've heard so many great things, but somehow never managed to attend. But this year I am not only heading over to Brighton, but I'll actually be on stage. Tickets will be on sale next week: ποΈ 2026.ffconf.org
FFConf π UK web conference since 2009
FFConf - the UK's best JavaScript and Web conference in Brighton.
2026.ffconf.org
First up: Fronteers Dark Mode in Dordrecht π³π± on October 2nd. With @cydstumpel.nl, @heydonworks.com, @csswizardry.com, @tunetheweb.com and @anjana.dev. And @jakearchibald.com as our MC. An amazing location and tickets only cost β¬99, and include dinner. Don't miss this! ποΈ fronteersconf.org
Fronteers Dark Mode, Friday, October 2nd, Dordrecht
Join us at Cinema de Witt in Dordrecht for our after work conference.
fronteersconf.org
It's been a great year for conferences. I've spoken at @beyondtellerrand.com and @cssday.nl and I've been so lucky to attend so many others, like State of the Browser, Web Day Out and Smashing Conference. It's sharing knowledge, learning and getting inspired. But mostly the community.
Been wangling a lot of weird CSS (weird to me at least), to finally push the 2026.ffconf.org web site live this lunch time. 1/2 the speakers live too. Loved the design we landed on (from my "fanzine" spec) - I think it works. Will be shouting about our speakers in coming weeks too π
FFConf π UK web conference since 2009
FFConf - the UK's best JavaScript and Web conference in Brighton.
2026.ffconf.org
With all the 3D CSS projects going around, Doom, Quake, etc it makes me want to revisit my 2019 100% CSS renders (based on artwork by Romain Trystram) github.com/propjockey/D...
This looks really awesome! After creating CSS DOOM Iβve been thinking about doing Quake as wellβ¦ and I did not think it was doable. Wellβ¦ I was wrong. π±π€©π₯
Agustin Capeletto@lowpoly.gg Β· 2mo agoI'm porting Quake to 3D CSS, so it runs in the browser without WebGL. It's open source πΉ Play it! cssquake.com Repo: github.com/LayoutitStud...
Today exactly 10 years ago, I spoke at CSS Day. Around that time I created a list of a handful of conference that I would love to speak at. And I am so lucky that was able to tick off most of them over the last 10 years. I even got to speak again at CSS Day last week. Just one left... for now.
πππ«π₯π² ππ’π«π ππ’ππ€πππ¬ ππ¨π« πππ₯ππππππ€ ππ’ππ§π§π ππππ ππ«π π§π¨π° π₯π’π―πβ΅ β¬200 until 1 July 2026. Inspiring presentations. Great conversations. JS Pub Quiz. Karaoke. π€ π 16 Nov 2026 | Ankersaal, Vienna ποΈ halfstackconf.com/vienna/tickets
Since weeks many people came to me and said how sad they are, that @beyondtellerrand.com wonβt happen in Berlin this year. Iβm sad too. Sponsors/Partners: do you hear this? Come back and support #btconf to bring it back to Berlin also. We need you to keep events affordable and make them happen!
I am so happy that HalfStack is back this year! And I will be back too! Want to know more about how created cssDOOM and learn some great CSS techniques along the way? Join me at HalfStack Vienna on the 16th of November!
HalfStack@halfstackconf.bsky.social Β· 2mo agoππ'π«π ππ«π’π§π π’π§π πππ₯ππππππ€ ππππ€ ππ¨ ππ’ππ§π§π ππ‘π’π¬ ππ¨π―ππ¦πππ« π¦πΉ Single track. Cool presentations. Great conversations. And the infamous pub quiz to close the night. 16 November 2026 | Ankersaal, Vienna ποΈ halfstackconf.com/vienna/tickets
(Mad?) scientist mode with CSS and @html5test.com showing animations on an oscilloscope. #CSSday π₯Ό
Next we have @html5test.com with a talk called CSS DOOM LASERS! So we've got some scientific equipment on stage and he's just brought out a fire extinguisher. Uh oh. @cssday.nl
