Firebug: Web Development Evolved
It’s tagline of “Web Development Evolved” might even be a bit of an understatement for a tool that lets you quickly select and inspect the underlying code of any element of any webpage no matter what platform. Originally developed for Firefox, Firebug is also available with slightly fewer features as Firebug Lite for other browsers.
Getting started with Firebug is as easy as downloading and installing. After relaunching Firefox, you’ll find the Firebug menu under web development of Firefox’s tools menu. From the Firebug menu, select “inspect element” and the Firebug window will appear at the bottom of the page you’re visiting.
As you mouse over different elements on the screen, you’ll notice rectangles appearing around those elements. Simply click one around an element you’d like to know more about, and a wealth of information will be displayed about the element’s HTML, CSS, scripts and more.
Putting Firebug to Work
Let’s say you’ve made a change to a stylesheet that all links will appear in a bright bold red, but for some reason a link or two simply refuses to cooperate. Usually, this would mean digging down into CSS and HTML and reviewing line after line of code and experimenting with revisions to isolate the problem. Any designer knows what a frustrating process and waste of time that can be.
With Firebug, however, it’s a matter of simply clicking to select the element to reveal its underlying code. What’s more, Firebug allows you to edit the webpage live so you have visual verification when the problem is fixed. While changes can’t be saved on the screen, the code can be copied and applied to the actual design files.
A Web Designer’s Best Friend
Since web pages show changes in real-time, Firebug can be a tremendous asset in web design, allowing designers to change any part of a page to see how a change in text size, font, background color or even content will look. Once satisfied, the code can be copied and applied to the actual templates being used for a particular page.
From Firebug’s layout tab, you can address CSS boxes that aren’t lining up properly and other layout issues with a visual breakdown of each element and the nested boxes around it defining border, margin, and padding. You can change those values to even move elements around on the page.
Designers also have the option to quickly copy code from websites they might want to emulate. Or they can see how their own design touches might look when applied to someone else’s pages. Ever wanted to be in the headlines? With Firebug, it’s easy to call up CNN.com or NYTimes.com and plug-in your photo and story.
Monitor Network Activity
If your web pages are taking too long to load, Firebug’s network monitoring function can help determine the cause with several useful tools. A timeline shows relative loading time of files, so the order they load can be arranged to minimize a website user’s wait time.
Firebug also breaks items down by type to troubleshoot particular types of files, provides cache status updates and provides a wealth of information on HTTP headers.
Firebug’s Continuing Evolution
With imitation being the sincerest form of flattery, both Chrome and Safari now come with web inspector capabilities with a continuing move toward incorporating developer tools. Mozilla has also announced it is working on its own built-in developer tools for Firefox, leaving many to wonder about Firebug’s future.
Long an open source program, Firebug’s future seems reasonably assured, however, recently becoming available on GitHub, meaning developers will have an easier way to work and collaborate on its continuing evolution.
About the author
This guest post is written by Eric Nacul, a tech enthusiast who enjoys writing freeware reviews at BestFreeOnline.net
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