Mozilla Tutorials

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    Open Multiple Firefox Tabs from Command Line

    Now that I work on Firefox Developer Tools, I'm really starting to learn some of the tricks of building, debugging, and launching Firefox.  Once I start using Firefox at a developer level each day, the more I become amazed at how configurable and easy to work...

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    Build Firefox Faster with Artifact Builds

    Working on Firefox DevTools has always been a dream of mine, mostly because it feels like the ultimate way to give back to the development community and those that helped me become a success.  And when I explain who Mozilla is and people ask "Oh, so...

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    Hello DevTools!

    When I was a 17 year old noob, going to technical college in my home town, I was introduced to a browser called Firebird, which would later be renamed Firefox.  I was immediately drawn to this new browser; Firebird was fresh, exuded excitement, but most of...

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    Create a 3D Panorama Image with A-Frame

    In the five years I've been at Mozilla I've seen some awesome projects.  Some of them very popular, some of them very niche, but none of them has inspired me the way the MozVR team's work with WebVR and A-Frame project have. A-Frame is a community project...

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    5 More Awesome New Mozilla Technologies Youâve Never Heard Of

    My original 5 Awesome Mozilla Technologies You've Never Heard Of post got a huge response and it was well deserved -- Mozilla's pool of amazing talent not only dreams up awesome projects but brings them to fruition.  A few years have gone by and we've seen...

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    Use Mozilla Firefox DevTools in Chrome

    I shared on Twitter last week that I do casual browsing in Google Chrome but do most of my development work in Firefox.  I can't give a great reason for doing so but Firefox has seemed like a development "security blanket" since I was in college (over a...

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    Mozilla, Web Virtual Reality, and A-Frame

    I was fortunate enough to make Game Developer Conference this year and the big story was virtual reality.  Hell, you couldn't go five feet without seeing someone pitching their VR hardware, software, or likewise technology.  They were all proprietary solutions, including Oculus, Epic Games, and so on.  You...

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    Open Firefox in Private Mode by Default

    Opening a Firefox Private Window is oftentimes the first step persons who value privacy do when they open their browser.  That made me think:  can you configure Firefox to open in private mode by default?  It turns out you can. about:config When you type about:config in the address bar of...

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    Add HTML Elements to XUL Addons

    I've been working on a new addon at Mozilla which isn't anywhere near finished so I wont bother telling you what it's meant to do...because it could change at any moment.  Since this is my first real addon, it's been a struggle, but that's a good...

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    Font Smoothing in Webkit and Firefox

    I don't pretend to be a typography or design expert -- I just know what looks good and what doesn't.  A few years ago I saw a few CSS properties I didn't recognize and when I toggled them on and off, the text went from beautiful to...not...