WebAssembly is a way of taking code written in programming languages other than JavaScript and running that code in the browser. So when people say that WebAssembly is fast, what ...
WebAssembly Browser Preview – Mozilla Hacks - the Web developer blog
Since the last WebAssembly milestone we reached in March, we’ve been hard at work in the WebAssembly Community Group to define a standard and to implement that standard in our ...
WebAssembly’s post-MVP future: A cartoon skill tree – Mozilla Hacks - the Web developer blog
People have a misconception—they think that the WebAssembly that landed in browsers back in 2017—is the final version. In fact, we still have many use cases to unlock, from heavy-weight ...
Why is WebAssembly a second-class language on the web? – Mozilla Hacks - the Web developer blog
This post is an expanded version of a presentation I gave at the recent WebAssembly CG meeting in Munich. WebAssembly has come a long way since its first release in 2017. The 1.0 version of WebAssembly was already a great fit for low-level languages like C and C++, and immediately enabled many new kinds of applications to efficiently target the web.
A peek into the WebAssembly Browser Preview
Following the introduction of asm.js, we have been working with other browser vendors including Mozilla, Google, Apple, along with the rest of the WebAssembly community group, to push the performance boundary of the web with WebAssembly. WebAssembly is a new, portable, size- and load-time-efficient binary compiler target, which promises near-native performance on the web. As
Why You Should Pay Attention to WebAssembly
There may come a day when the humble web browser – having already yielded enterprise grade server side technologies like Firecracker, Isolates and Node.js – has nothing of interest left for the industry to extract. But that day has certainly not arrived yet, as the increasing chatter around WebAssembly (WASM) proves. The fact that people
A Tale of Three WebAssembly Runtimes
Walking through the implementation of three different WebAssembly runtimes from scratch
WebAssembly and its platform targets
When talking about WebAssembly, one of the things that often confuses people is the lack of a great analogy for the various platform targets that WebAssembly supports. This ends up being a bit important as it dictates whether your WebAssembly code will (not) work with another bit as it all
The Baseline Interpreter: a faster JS interpreter in Firefox 70 – Mozilla Hacks - the Web developer blog
Modern web applications load and execute a lot more JavaScript code than they did just a few years ago. While JIT (just-in-time) compilers have been very successful in making JavaScript ...
Instructions — WebAssembly 3.0 (2026-06-03)
WebAssembly computation is performed by executing individual instructions.
Rust and the Future of Systems Programming – Mozilla Hacks - the Web developer blog
If you’re a regular reader of Hacks, you probably know about Rust, the ground-breaking, community-driven systems programming language sponsored by Mozilla. I covered Rust on Hacks back in July, to ...
WebAssembly | MDN
WebAssembly (Wasm) is a low-level assembly-like language that brings near-native performance to the web. It serves as a compilation target for languages like C/C++, C#, and Rust, allowing high-performance code to run directly in the browser.
Make the Web Work For Everyone – Mozilla Hacks - the Web developer blog
Updated 2016/07/22: Commenters found a few data errors (thanks!) which have now been corrected. Millions of websites have compatibility problems on one or more of the major browsers, leading to ...
missing the point of webassembly — wingolog
wingolog: article: missing the point of webassembly
WebAssembly browser preview · V8
WebAssembly or Wasm is a new runtime and compilation target for the web, now available behind a flag in Chrome Canary!
A practical guide to WebAssembly memory | radu's blog
Memory in WebAssembly is one of the topics that creates confusion for newcomers, particularly for those with experience in languages with memory management features like garbage collection, such as JavaScript, Go, or Java. In this article we explore using memory in WebAssembly in various scenarios - passing JavaScript arrays to Rust and AssemblyScript modules, checking for some basic memory leaks using Valgrind, or exchanging strings between runtimes and modules using Wasmtime.