Mozilla Hacks is written for web developers, designers and everyone who builds for the Web. Hacks is produced by Mozilla's Developer Relations team and features hundreds of posts from Mozilla ...
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Here's an insider's look at Firefox's code quality toolchain that's been designed to manage the ongoing development and monthly releases of our desktop browser. This post explores the architecture, challenges, ...
Jen Simmons' seven-part mini-series on resilient CSS and how you can create great graphic design on the web, now, and not have to worry about all the old browsers.
A browser is an enormously complex piece of software, and it's always in development. About a year ago, we asked ourselves: how could we do better? Our CI relied heavily ...
The Machine Learning team at Mozilla continues work on DeepSpeech, an automatic speech recognition (ASR) engine which aims to make speech recognition technology and trained models openly available to developers. ...
How to use Wasmtime in a .NET application to load and execute WebAssembly code.
CSS Grid has been available in most major browsers since early 2017, and it makes web layout more powerful than ever before. But complex-looking new syntax (line-names! grid-areas! minmax! fit-content! ...
Protecting the security and privacy of individuals is a central tenet of Mozilla’s mission. While we continue to make extensive use of both sandboxing and Rust in Firefox to address ...
Dodrio is a new virtual DOM library that is designed to leverage the strengths of both Wasm’s linear memory and Rust’s low-level control by making extensive use of fast bump ...
Performance is tricky to measure, and has many aspects. Also, in a new technology there are always going to be not-yet-optimized cases. So not every single benchmark will be fast ...
Author's note: Since this post was written, the API of postMessage has changed slightly. When sending a SharedArrayBuffer with postMessage, the buffer should no longer be in the transfer list ...
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 ...
Mozilla has been fuzzing Firefox for a while. It has proven to be one of the most efficient ways to identify quality and security issues.
WebGPU is an emerging API, designed from the ground up within the W3C, to provide access to the graphics and computing capabilities of hardware on the web.
SIMD stands for Single Instruction Multiple Data, and is the name for performing operations on multiple data elements together. For example, a SIMD add instruction can add multiple values, in ...
Recently we’ve seen how WebAssembly is incredibly fast to compile, speeding up JS libraries, and generating even smaller binaries. We’ve even got a high-level plan for better interoperability between the ...
Those of you on the cutting HTML5 edge may have already heard of the exciting Web Components specification. If you haven't, you'll probably want to read up on what makes ...
A detailed look at how we replaced the most performance-sensitive portions of the source-map JavaScript Library’s source map parser with Rust code that is compiled to WebAssembly. The results: The ...
WebAssembly.Studio is an online IDE (integrated development environment) that helps you learn and teach others. It’s also a Swiss Army knife that comes in handy whenever working with WebAssembly (WASM). ...
As reported by Cameron McCormack, Firefox Nightly (version 29) now supports CSS variables. You can get a quick overview in this short screencast: You can define variables in a ...
We decided it was time to reinvest in the PDF viewer (PDF.js) and support filling PDF forms within Firefox to make our users' lives easier.
At Mozilla, we want the web to be capable of running high-performance applications so that users and content authors can choose the safety, agency, and openness of the web platform. ...
You might have heard about Mozilla's WebExtensions, our implementation of a new browser extension API for writing multiprocess-compatible add-ons. Maybe you've been wondering what it was about, and how you ...
This post will describe my recent work on Cranelift as part of my day job at Mozilla. In this post, I will set some context and describe the instruction selection problem. In particular, I’ll talk about a revamp to the instruction selector and backend framework in general that we’ve been working on.
For the last year, we've been working on the development of rust-minidump. The final part in this series takes you through fuzzing rust-minidump.
Web Components comprises a set of standards that enable user-defined HTML elements. These elements can go in all the same places as traditional HTML. Despite the long standardization process, the ...
Multi-value is a proposed extension to core WebAssembly that enables functions to return many values, among other things. It is also a prerequisite for Wasm interface types. Nick Fitzgerald has ...
Regular expressions – commonly known as RegExps – are a powerful and heavily used tool for manipulating strings in JavaScript. This post describes how we updated the RegExp engine in ...
asm.js is an easy-to-optimize subset of JavaScript. It runs in all browsers without plugins, and is a good target for porting C/C++ codebases such as game engines - which have ...
WebAssembly has begun to establish itself outside of the browser via dedicated runtimes like Mozilla’s Wasmtime and Fastly’s Lucet. While the promise of a new, universal format for programs is ...
Memory safety violations can cause programs to crash unexpectedly and can be exploited to alter intended behavior--languages can manage this multiple ways