2026 Web Engines Hackfest Yearly web platform community event for people working on the different engines, testing, specifications, web compat, documentation.

Look, the Web Engines Hackfest is now a W3C-endorsed conference: www.w3.org/events/confe...
Some working groups might arrange meetings at the hackfest. Thanks to W3C for your support and collaboration.

We have more than 80 people registered to participate onsite in the Web Engines Hackfest 2026: webengineshackfest.org#attendees
If you want to join us, please fill the form at: forms.gle/7gSwfFebFW7s...

Arm logo

We're glad to announce that Arm is sponsoring one more year the Web Engines Hackfest 2026, this time as sliver and coffee & snacks sponsors! 🎉
Big thanks for the continuous support. 🙏

Huawei logo

We are happy to announce Huawei as silver sponsor of the Web Engines Hackfest 2026! 🎉
Thank you very much for your ongoing support 🙏

the web is made of many pieces, which work together to form the whole

some key pieces meet at Web Engines Hackfest

Build software better, together GitHub is where people build software. More than 150 million people use GitHub to discover, fork, and contribute to over 420 million projects.

As usual, the main part of the event will be the breakout sessions, please add your proposals at github.com/Igalia/weben...

Call For Papers: Lightning Talks - Web Engines Hackfest 2025 Lightning talks can cover any topic related to the web platform, you can use them to quickly introduce any topic you want to discuss during the event. They are expected to be approximately 2-3 minutes...

This year we'll also have lightning talks if you want to quickly introduce some topic to the audience during the first day, if that's your case please fill the form at forms.gle/w9UcLminXTwS...

Call For Papers: Talks - Web Engines Hackfest 2025 Talks can cover any topic related to the web platform. They are expected to be approximately 20 minutes long and will be followed by a brief moderator-curated Q&A. Both onsite and remote presentations...

We have opened the CFP for the Web Engines Hackfest 2026, you can send your talk proposals at forms.gle/pNz4FqxziBTs...

Web Engines Hackfest 2026 - Data Please complete this short form to confirm your onsite participation in the Web Engines Hackfest 2026 (15-17 June in A Coruña, Galicia, Spain). Remember that you don't need to fill out this form to pa...

A little over 3 months to go until Web Engines Hackfest 2026, happening June 15–17 in A Coruña!
If you plan to attend onsite, please register here: forms.gle/7gSwfFebFW7s...
We already have more than 50 people registered: webengineshackfest.org#attendees

If you're thinking about conferences for next year, you might want to consider the Web Engines Hackfest in A Coruña next June.
We already have an initial list of registered attendees webengineshackfest.org#attendees
You can register for onsite attendance at forms.gle/7gSwfFebFW7s...

12 November 2025 | Web Engines Hackfest / TPAC 2 | Calendar The World Wide Web Consortium (W3C) is an international community where Member organizations, a full-time staff, and the public work together to develop Web standards.

If you're at W3C TPAC, tomorrow there will be breakout session about the Web Engines Hackfest, where you will learn more about the event and can ask anything about it www.w3.org/events/meeti...

Web Engines Hackfest 2026 - Data Please complete this short form to confirm your onsite participation in the Web Engines Hackfest 2026 (15-17 June in A Coruña, Galicia, Spain). Remember that you don't need to fill out this form to pa...

Registration form for the Web Engines Hackfest 2026 is now open: forms.gle/7gSwfFebFW7s...
A couple of reminders, it'll happen in June 15 to 17 in A Coruña (Galicia, Spain) and you only need to register if you're planning to attend onsite.
More info about the event at webengineshackfest.org

Great event - and fortunately not conflicting with css day this year, i think. If you can, try to make it!

Announcing the 16th Web Engines Hackfest | Igalia Igalia is an open source consultancy specialised in the development of innovative projects and solutions. Our engineers have expertise in a wide range of technological areas, including browsers and cl...

Save the date! The Web Engines Hackfest 2026 will be held from June 15 to 17 in A Coruña (Galicia, Spain) www.igalia.com/2025/10/01/A...

And you can find recordings of all the Web Engines Hackfest talks at www.youtube.com/playlist?lis...

Web Engines Hackfest 2025 Explore this photo album by Web Engines Hackfest on Flickr!

A look back at the Web Engines Hackfest 2025: we have just published photos at flickr.com/photos/webha... 📷

Adrián Pérez de Castro - Jumping Over the Garden Wall - WPE WebKit on Android YouTube video by Web Engines Hackfest

For those who missed Adrián's talk at the @webengineshackfest.org about #WPE on #Android, the talk recording and the slides are now available:

- Video: www.youtube.com/watch?v=tjtv...
- Slides: www.slideshare.net/slideshow/ju...

Web Engines Hackfest 2025 - YouTube

Videos: Web Engines Hackfest 2025
@webengineshackfest.org
www.youtube.com/playlist?lis...

#ECMAScript #JavaScript

Compiling JavaScript Ahead of Time

Compiling JavaScript Ahead of Time, by @goose.icu (@webengineshackfest.org):

https://www.youtube.com/watch?v=RU5N5O-O5Zw

#videos #javascript #javascriptengines #compiling

Web Engines Hackfest 2025 - YouTube

📽️ All the videos of the Web Engines Hackfest 2025 talks are available in the following playlist. Enjoy them! www.youtube.com/playlist?lis...

Thomas Steiner - Built-in AI APIs for the Web YouTube video by Web Engines Hackfest

Thomas Steiner talks about built-in AI APIs for the Web at the Web Engines Hackfest 2025 @tomayac.com www.youtube.com/watch?v=FNcD...

Mike Pennisi - YouTube video by Web Engines Hackfest

Mike Pennisi talks about AT Driver and how to automate assistive tech with standards at the Web Engines Hackfest 2025 www.youtube.com/watch?v=2Xip...

Adrián Pérez de Castro - Jumping Over the Garden Wall - WPE WebKit on Android YouTube video by Web Engines Hackfest

Adrián Pérez de Castro talks about WPE WebKit on Android at the Web Engines Hackfest 2025 @wpewebkit.org www.youtube.com/watch?v=tjtv...

Christian Ulbrich - Versioned Web Components YouTube video by Web Engines Hackfest

Christian Ulbrich talks about Versioned Web Components at Web Engines Hackfest 2025 www.youtube.com/watch?v=eJmC...

This was a really insightful talk! A lot goes into onboarding all kinds of newbies into spec & browser work but mentorship is the most important (imo). Having a program like this is a net positive on the whole browser ecosystem. 🔥

In this talk, I tell the story of how we're leveraging the Rust programming language to accelerate the Temporal implementation in V8. 🦀🦖

Haukenes, Barash & Carr - Cross-Engine Contributions at Scale: How newcomers accelerated Temporal... YouTube video by Web Engines Hackfest

Jonas Haukenes, Mikhail Barash & Shane Carr talk about how students have been helping with implementation of TC39 proposals in SpiderMonkey, V8, and Boa @bergen @sffc.bsky.social www.youtube.com/watch?v=WieD...

Joyee Cheung - Bridging CommonJS and ESM in Node.js YouTube video by Web Engines Hackfest

Joyee Cheung talks about CommonJS and ESM in Node.js at the Web Engines Hackfest 2025 @joyeecheung.bsky.social @nodejs.org www.youtube.com/watch?v=YRue...

Leo Kettmeir - JSR: under the hood & native support in the ecosystem YouTube video by Web Engines Hackfest

Leo Kettmeir talks about the JavaScript Registry (JSR) at the Web Engines Hackfest 2025 @kettmeir.dev @jsr.io www.youtube.com/watch?v=Lc15...

Andreu Botella & Luca Casonato - WinterTC: a standard for server-side runtimes YouTube video by Web Engines Hackfest

Andreu Botella & Luca Casonato talk about the new WinterTC and their plans related to standards for server-side runtimes @andreubotella.com @lcas.dev www.youtube.com/watch?v=elGN...