.css-day {
  date: 'June 8 & 9';
  speakers: 14; // Single-track
  venue: Zuiderkerk; // Amsterdam, NL

Order your tickets

Photo 2


CSS Day 2023 tickets are €675 (€816.75 including 21% Dutch VAT).

A conference ticket includes:

  • Access to the conference on both days
  • Coffee, tea, lunch, and refreshments throughout both days
  • Drinks and a bite on both evenings

Tickets are non-refundable, but you can transfer them to someone else.

Order your tickets (via webconferences.nl)

We don't require an immediate payment during checkout. You will receive a confirmation email and invoice with payment options for bank transfer, iDEAL, credit card, Apple Pay, Google Pay, Bancontact, EPS, giropay, Przelewy24, and Sofort. It may take two business days before you receive this email.

We expect all our attendees to be aware of our code of conduct.


Since the conference is taking place in The Netherlands, 21% Dutch VAT will be added to all ticket prices.

Article 53 of the European VAT directive requires us to charge VAT even to foreigners:

"B2B services in respect of admission to cultural, artistic, sporting, scientific, educational, entertainment and similar events will be taxed at the place where those events actually take place."


If you want to visit the Netherlands for a short stay (up to 90 days), you might need a visa. How you apply for a visa depends on your country.

For more information, see Applying for a short-stay Schengen visa.

If you need help with an invitation letter, please let us know.

“Cool to see some people i've been following for years on Twitter also in real life!” — Wouter Muller