Web Development

Maybe don’t use custom properties in shorthand properties

Manuel Matuzović: That an invalid...

An Essential Value – A List Apart

Humility, a designer’s essential value—that has a nice ring to it. What about humility, an office manager’s essential value? Or a dentist’s? Or a...

Why Your API is ‘Broken by Design’ Without JSON Schema

People might argue that JSON Schema is overkill or outdated. But in this article, we'll explore...

Announcing Official Puppeteer Support for Firefox – Mozilla Hacks

We’re pleased to announce that, as of version 23, the Puppeteer browser automation library now has first-class support for Firefox....

How to Retrieve WiFi Password on Windows

Remembering the WiFi password when on a guest network is never easy. Even worse is when it's no longer posted and someone else...

I am a creative.

I am a creative. What I do is alchemy. It is a mystery. I do not so much do it, as let it be...

SemVer to CalVer and Beyond. And Which One Should You Choose?

Introduction to VersioningIf you're a software veteran, you already know what versioning is and why it...

0Din: A GenAI Bug Bounty Program – Securing Tomorrow’s AI Together – Mozilla Hacks

As AI continues to evolve, so do the threats against it. As these GenAI systems become more sophisticated and widely...

How to Set Date Time from Mac Command Line

Working on a web extension that ships to an app store and isn't immediately modifiable, like a website, can be difficult. Since you...

Opportunities for AI in Accessibility – A List Apart

In reading Joe Dolson’s recent piece on the intersection of AI and accessibility, I absolutely appreciated the skepticism that he has for AI in...

Launching Interop 2025 – Mozilla Hacks

The Interop Project is a collaboration between browser vendors and other platform implementors to provide users and web developers with...

Case Insensitive CSS Attribute Selector

CSS selectors never cease to amaze me in how powerful they can be in matching complex patterns. Most of that flexibility is in...

The Wax and the Wane of the Web – A List Apart

I offer a single bit of advice to friends and family when they become new parents: When you start to think that you’ve got...

What Happened to These ‘Game-Changing’ JavaScript Projects in the last 10 years? And What’s Next?

It’s been 10 years since I first set off on my software engineering journey back in...