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Dublin, Ireland · TPAC 2026

W3C TPAC hackathon

Two challenges, 90 minutes to build, and an evening of demos. Bring your laptop and try an idea.

Register now See the schedule

Free for TPAC attendees

Solo or in pairs

All experience levels

Light dinner provided

The challenges

01

Visualize standards data

Turn standards data into a useful visualization, dashboard, or report.

Any web technology 90 minutes

02

Improve a W3C tool

Contribute to your favorite W3C tool: fix a bug, improve documentation, or add a useful feature.

Any web technology 90 minutes

Schedule

26 October 2026
All times GMT · Dublin

  1. Arrive & get together

    Light dinner, introductions, and an overview of the challenges.

  2. Time to build

    90 minutes. Build an individual project.

  3. Submit your project

  4. Lightning demos and voting

  5. Prizes and close

Taking part

Rules

  • You have 90 minutes to build or sketch.
  • Work solo — each submission must be your own individual project.
  • Build it on the night. Reusing your own snippets is fine.
  • AI tools are allowed — just be ready to explain your process.

How to enter

  1. Create a GitHub repository for your project.
  2. Put your code and anything else you made in it.
  3. Post your entry as a comment in the issue thread for your challenge: project title, your name, what it does, the repository URL, and a screenshot or other visual of your project.

Demos

  • Each participant gets 60 seconds to demo their project.
  • Please have a link, screenshot, GIF, or short recording ready that others can view.
  • Keep it snappy: explain what you built, show the coolest part, and tell us why it's interesting.
  • No live setup or debugging. We'll save questions and conversations for afterwards.

Voting

  • Everyone gets exactly 3 votes.
  • Vote by reacting with 👍 to three different project comments in the GitHub voting issue.
  • Please don't vote for your own submission.
  • Voting closes at the announced time.
  • Each person can win only one prize.

FAQ

Do I need to prepare anything?

No preparation is required. Bring your laptop and a browser. If you plan to contribute to a W3C tool, you can check its contribution guidelines and set up your development environment beforehand.

Do I need to be a TPAC attendee?

The hackathon is open to everyone attending TPAC 2026. If you are in Dublin that week and not registered for TPAC, get in touch.

What if I do not finish?

Submit what you have. Sketches and unfinished prototypes are welcome.

Can I use a framework, or AI?

Yes. Any framework or AI tool is welcome. Be ready to explain your approach.

How is it judged?

Everyone gets three votes. After the lightning demos, vote for your three favourite individual submissions by reacting with 👍 in the GitHub voting issue. The most-voted eligible submission wins the main prize, with the other prizes awarded to different participants.

From the evening

Projects

Projects from the night will appear here.

See submissions on GitHub

Available after 26 October.

With support from

Sponsors