Technically

Technically

What's WebAssembly?

WebAssembly is an experimental technology that allows developers to build really fast web applications that run in your browser.

Justin's avatar
Justin
Mar 06, 2024
∙ Paid
4
Share

The TL;DR

WebAssembly is an experimental technology that allows developers to build really fast web applications that run in your browser.

  • You can write whatever programming language you want on your server: but only JavaScript runs in the browser

  • JavaScript is great, but it can have performance limitations; other languages are usually faster for specific …

Keep reading with a 7-day free trial

Subscribe to Technically to keep reading this post and get 7 days of free access to the full post archives.

Already a paid subscriber? Sign in
© 2025 Justin
Privacy ∙ Terms ∙ Collection notice
Start writingGet the app
Substack is the home for great culture