23-24 March | Barcelona

WASM I/O 2023

All things WebAssembly

Wasm I/O is a two-day single-track conference focused on the WebAssembly ecosystem.
Join us in our first edition!

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The Wasm
in Europe

Join the WebAssembly community from around the world for two days of deep technical sessions. There is no better place to share, discuss, collaborate and socialize with other WebAssembly professionals.

WASM I/O 2023 will take place in the beautiful city of Barcelona. Don’t miss the chance to join us and shape the future of WebAssembly!

Detail illustration WASM I/O Detail illustration WASM I/O

2 days

23-24 March 2023


An unbeatable location


Thank you everyone who submitted to our CFP.
We are currently reviewing all submissions and will publish the agenda soon. In the meantime, check the already accepted sessions.

See Accepted Sessions

Secure your ticket!

Early Bird

227 €

Until 15th Dec


297 €

16th Dec 22 - 1st Mar 23

Late Bird

367 €

After 1st March

*All prices exclude VAT

Get your Ticket today

Discover Barcelona

Wasm I/O will be held at the AXA Convention Center which part of an enormous complex located on the main artery of Barcelona. City communications are excellent and access from Barcelona’s Airport and Sants Station is very quick.

Barcelona is a city with a wide range of original leisure options that encourage you to visit time and time again. Overlooking the Mediterranean Sea, and famous for Gaudí and other Art Nouveau architecture, Barcelona is one of Europe’s trendiest cities.

More about the Venue
Detail illustration WASM I/O Detail illustration WASM I/O

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