Due to some recent changes in the way that we use eslint to check that our coding style linting Mozilla source code in Atom has been broken…

A little while back we landed a feature that made it possible to interact with events from the markup panel of Firefox developer tools. A…

I recently realized that support for inspection of DOM events is very poor in pretty much all developer tools. Having seen Opera Dragonflies…

When it comes to the Firefox Developer Tools Inspector one of our most common requests is that our highlighter should support box model…

I recently discovered that it is possible to use Firefox Developer Tools with Thunderbird. Philipp Kewisch has done a fantastic job of his…

When Joe Hewitt was seven years old his father wanted to become a computer programmer so he bought an IBM PCjr. Joe would often watch his…

Since my post about what it is like to work as an engineer at Mozilla lots of people have asked about why I chose to work for Mozilla. I had…

Even after a few years working for Mozilla I still occasionally come across a Bugzilla tip that I don't know about. This post is a attempt…

At the beginning of April Alex Limi decided that we should remove the Enable JavaScript checkbox from Firefox's preferences dialog. His…

If you have ever used the application cache you will probably be familiar with how easy it is to break offline functionality and how…

Hopefully, most of you are familiar with Firefox Developer Tools by now, if not then now is the time to get familiar! The DevTools Team…

Having downsized my home a couple of times in the last year it is no understatement to say I have urgent space issues. I have power tools…

This question popped up on Quora recently. I have been working on the Developer Tools Team at Mozilla for over a year now and would love to…

I have received a flood of emails today from people asking about what SOPA is and was surprised when I looked online and didn't see any…

Preface Introduction The Browsers We Will Talk About The Browser's Main Functionality The Browser's High Level Structure Communication…

Okay, I have had the job now for over 3 months but I have really been neglecting my blog... after all, you all deserve to know about what we…

So, it has been a long time coming, but I am sure that once you have experienced the awesome that the Mozilla developers have produced you…

Almost a year since I last posted, I can't believe it. I am no longer spending time working on Firebug Lite, but am spending my spare time…

We have made a bunch of changes to Firebug Lite over the last few months and it is about time we shared them with you. For those that don't…