Forging Better Tools for the Web

A Firefox DevTools Retrospective

2017 was a big yr for Firefox DevTools. We up-to-date and refined the UI, refactored three of the panels, squashed numerous bugs, and shipped several brand new features. This work not only supplies a faster and better DevTools encounter, but lays the groundwork for a few exciting new features and enhancements for 2018 and beyond. We’ re always striving to make equipment and features that help programmers build websites using the latest technology and standards, including JavaScript frameworks and, of course , CSS Grid.

To better understand where we’ re headed with Firefox Devtools, let’ s take a quick look back again.


In 2016, the particular DevTools team kicked off a good ambitious initiative to completely transition DevTools away from XUL and Firefox-specific APIs to modern web technologies. Major projects to emerge was debugger. html .

Debugger. html is not just an iteration from the old Firefox Debugger. The group threw everything out, created a clear repo, and set out to build a debugger from scratch that utilized reusable Respond components and a Redux store design.

The benefits of this contemporary architecture become obvious right away. Almost everything was more predictable, understandable, plus testable. This approach also allows debugger. html to target more than just Firefox. It could target other platforms such as Chromium and Node.

All of us also shipped a new Responsive Style Mode in 2016 that was built using only modern internet technologies.


Last year, we all continued to build on the work which was started in 2016 by building, and repairing parts of Firefox DevTools (and including new features along the way). Because of this, our developer tools are quicker and more reliable. We also released Firefox Quantum, which focused on internet browser speed, and performance.


The debugger. html work that started in 2016 shipped to all channels with Opera 56 . We also additional several new features and enhancements, including better search tools, flattened framework call-stacks, async stepping, and much more.


Just as with debugger. html, we delivered a brand-new Firefox console along with Firefox Quantum . It has a brand new UI, and has been completely rewritten using React and Redux. This particular new console includes several brand new improvements such as the ability to collapse sign groups, and the ability to inspect items in context.

System Monitor

We furthermore shipped a new network monitor to all channels in Opera 57. This new Network Keep track of has a new UI, and is (you actually guessed it) built with modern internet technologies such as React and Redux. It also has a more powerful filter URINARY INCONTINENCE, new Netmonitor columns, and more.

CSS Grid Layout Screen

Firefox 57 delivered with a new CSS Grid Design Panel . CSS Grid is usually revolutionizing web design, and we wanted to provide designers and developers with effective tools for building and checking CSS Grid layouts. You can examine all about the panel features right here ; highlights include an overlay to visualize the grid, a good interactive grid outline, displaying main grid area names, and more.

Photon UI

We all also did a complete visual renew of the DevTools designs to coincide with the launch associated with Firefox Quantum and the new Lichtquant UI. This refresh brings the design that is clean, slick, and simple to read.

2018 plus Beyond

All of this function has set up an exciting future regarding Firefox DevTools. By utilizing modern internet technologies, we can create, test, plus deploy new features at a quicker pace than when we were depending on XUL and Firefox-specific APIs.

So what’ s following? Without giving too much away, listed here are just some of the areas we are focusing on:

Better Tools for Designs and Design

This really is 2018 and static designs produced in a drawing program are being exceeded by more modern tools! Designing within the browser gives us the independence to experiment, innovate, and create faster. Speaking with hundreds of developers in the last year, we’ ve learned that there exists a huge desire to bring better style tools to the browser.

We’ ve been thrilled simply by overwhelmingly positive feedback around the CSS Grid Layout Panel and we’ ve heard your requests for further tools that help design, develop, and inspect layouts.

We are creating a Firefox Inspector tool to make it simpler to write Flexbox code. What do you desire it to do the most? What’ h the hardest part for you whenever struggling with Flexbox?
@jensimmons, 14 November 2017

I’ m so pleased about this a reaction to the Firefox Grid Inspector. Which was the plan. We’ ve just obtained started. More super-useful layout equipment are coming in 2018.
@jensimmons, twenty-four Nov 2017

Better Tools for Frameworks

2017 was a banner ad year for JavaScript frameworks for example React and Vue . There are also older favorites for example Angular and Ember that continue to develop and improve. These frameworks are usually changing the way we build for your web, and we have ideas designed for how Firefox DevTools can much better equip developers who work with frameworks.


The work on the Opera DevTools UI will never be completed. We believe there is always room with regard to improvement. We’ ll continue to work together with the Firefox Developer community to check and ship improvements.

New DevTools poll: Which of these three alexa plugin layouts do you prefer for the System panel?

More Projects on GitHub

We tried something totally new when we started building debugger. code . We decided to build the particular project in GitHub. Not only do we find a number of new contributors, yet we received a lot of positive comments about how easy it was to locate, take care of, and work with the code. We are looking for more opportunities to bring the projects to GitHub this year, therefore stay tuned.

Get Involved

Have an idea? Found the bug? Have a (gasp) complaint? We are listening very closely to devtools users as we move into 2018 and want to hear from you. Here are some from the ways you can join our community and obtain involved:

Join all of us on Slack

You are able to join our devtools. html Slack community . We also hang out on the #devtools channel on irc. mozilla. org

Follow us on Tweets

We have an official accounts that you can follow, but you can also stick to various team members who will occasionally talk about ideas and ask for feedback. Adhere to @FirefoxDevTools right here .


If you want to get your hand unclean, you can become a contributor:

List of open insects

Download Opera Developer Edition

Firefox Developer Edition is built specifically for developers. It offers early access to all of the great new functions we have planned for 2018.

Thank you to everyone that has contributed so far. Your tweets, annoy reports, feedback, criticisms, and recommendations matter and mean the world in order to us. We hope you’ ll sign up for us in 2018 as we carry on our work to build amazing equipment for developers.

Journalist, technology writer, and video producer assisting Mozilla keep the Web open plus accessible for everyone.

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