To celebrate the 10th anniversary of Firefox Mozilla presents the Firefox Developer Edition, the first Browser built for Developers.
Firefox Developer Edition includes all the tools experienced web developers are familiar with:
Develop, deploy and debug Firefox OS apps directly in your browser, or on a Firefox OS device, with this tool that replaces App Manager.
Responsive Design View
See how your Website or Web app will look on different screen sizes without changing the size of your browser window.
Develop and debug your apps across multiple browsers and devices with this powerful extension that comes pre-installed with Firefox Developer Edition.
Web Audio Editor
Inspect and interact with Web Audio API in real time to ensure that all audio nodes are connected in the way you expect.
Examine the HTML and CSS of any Web page and easily modify the structure and layout of a page.
See all the network requests your browser makes, how long each request takes and details of each request.
View and edit CSS styles associated with a Web page, create new ones and apply existing CSS stylesheets to any page.
Download Firefox Developer Edition