Awesome Web Demos
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Demo Studio
Do you want to show the world what the Web can do? Demo Studio is your place for sharing awesome demos and experiments with the latest Web standards and open technologies.
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Hacks Blog
Learn more about developer features and the latest technologies through articles and demos on the Hacks Blog.
Popular Web Documentation
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HTML5
Find out what HTML5 is really all about and how you can develop for a better Web through open standards.
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JavaScript
A great resource for anyone working with JS.
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CSS
You'll find everything you need in the CSS reference and helpful tutorials to build pretty websites.
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DOM
The DOM is the architecture for Web documents; learn how to use the DOM and its API to look at and manipulate Web content.
Favorite Web Developer Tools
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Firebug

The most popular and powerful web development tool.
"An absolute necessity for anyone doing serious web development. Awesome!!!!"
– geckoday via AMO -
Web Developer

Firefox Add-on that adds a lot of great developer tools that are just a click away.
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Page Speed

Evaluate performance of web pages with this Firefox/Firebug Add-on
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Firecookie

Another great Firefox/Firebug Add-on that helps you view and manage cookies in your browser.
- All web development tools
Recent Web News & Updates
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Firefox Aurora Marketplace for Android available now
Today, Mozilla announced the Firefox Aurora Marketplace release. We’re hoping that Aurora users, our awesome early adopters, will go experience the Firefox Marketplace on their Android phones and let us know what they think. Our goal is to collect as much real-life feedback as possible about the Marketplace’s design, usability, ...
Posted by Bill Walker
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Mozilla Hacks Weekly, October 18th 2012
The web has so much great information, and naturally we want to share it with you! Here are the latest link suggestions from Mozilla’s Developer Engagement team! Weekly links If there is anything you think we should read or know about, don’t hesitate to post a comment, contact us on ...
Posted by Robert Nyman
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Broken promises of HTML5 and what’s next? – a presentation at HTML5DevConf
Yesterday Mozilla attended the HTML5 Developer Conference in San Francisco, California to give a keynote presentation. The very packed schedule of the conference already covered a lot of topics around the subject matter, which is why we considered it worth while to contribute with a talk that told tales from ...
Posted by Chris Heilmann
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Weekly HTML5 Apps Developer Resources, October 17th 2012
Weekly Resources for HTML5 Apps Developers Articles Lazy Parsing in JavaScript Engines Replacing text in the DOM Sizzle, jQuery’s CSS selector engine JavaScript Profiling With The Chrome Developer Tools A Survey of JavaScript Timers on Mobile Resources Store.js – Cross Browser Local Storage – Webcast Pageguide.js – An interactive guide ...
Posted by Joe Stagner
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Aurora 18: HiDPI & Touch Events
In this Aurora cycle, Firefox gained several new interesting features: HiDPI displays are now supported (like Mac’s Retina) Performance and Memory improvements (with IonMonkey and a huge improvement for people using HTTP proxies) Web standard support: HTML5, JS & CSS new features, with the full support of the W3C Touch ...
Posted by Jean-Yves Perrier


Mozilla Developer Network