Global Nav Open Menu Global Nav Close Menu; Apple; Shopping Bag +. Firebug is a Firefox extension that puts a wealth of Web development tools at your fingertips while you browse. You can edit, debug, profile and monitor CSS.
Firebug is a Firefox add-on which integrates a host of essential web development tools into the browser.
A powerful source editor shows you the HTML source as it's being transformed by JavaScript, highlighting changes as they happen so they're easy to spot. You can view the properties of any individual element in a click or two, click on page objects to instantly see the HTML and CSS behind them, and even create, edit or delete HTML elements and see the changes right away.
Firebug's CSS tools make it easy to see which rules are styling individual page elements. Or you can view entire style sheets, if you prefer. If there are problems then you're able to disable any CSS property in a click, just to see how a page appears without them. And not only does Firebug allow you to edit CSS properties, it also knows which keywords you can use, so you don't have to remember every option yourself: just press the Up and Down arrows and the program will cycle through all the possibilities.
Firebug also includes a very powerful JavaScript debugger, which is able to step through scripts, can pause execution on particular lines, break on errors, watch expressions, and more. Or, if everything works, but performance is poor and you're not sure why, then Firebug's JavaScript profiler could help you figure out the problem.
Get Firebug
Other tools on offer will help you to check page load times, understand JavaScript, CSS or XML errors, or log in-depth details on what's happening as your page runs.
Firebug For Safari Mac Free Download Pc Windows 10
Version 2.0.19 (Changelog)
Verdict:
Avg Free Download
Firebug offers an excellent set of web development tools, and despite all its power remains generally very easy to use
The story of Firefox and Firebug are synonymous with the rise of the web. We fought the good fight and changed how developers inspect HTML and debug JS in the browser. Firebug ushered the Web 2.0 era. Today, the work pioneered by the Firebug community through the last 12 years lives on in Firefox Developer Tools. Switch to the latest version of Firefox and see the very latest devtools updates.
There are too many contributors to count but here are the names that come to mind. Thank you for you work and passion for Firebug. It was not possible without you.
| All Members | |
|---|---|
| Jan 'Honza' Odvarko | Christoph Dorn |
| John J. Barton | Steven Roussey |
| Joe Hewitt | Sebastian Zartner |
| Steve Souders | Pedro Simonetti Garcia |
| Douglas Crockford | Harutyun Amirjanyan |
| Dion Almaer | Stampolidis Anastasios |
| Kevin Sawicky | Joe Walker |
| Rob Campbell | Farshid Beheshti |
| Azer Koçulu | Simon Lindholm |
| Curtis Bartley | Florent Fayolle |
| Hans Hillen | Jakob Kaltenbrunner |
| Kevin Decker | Belakhdar Abdeldjalil |
| Mike Collins | Alistair Laing |
| Mike Ratcliffe | |
| Austin Andrews | |
| Hernan Rodríguez Colmeiro | |
| Translators | |
|---|---|
| Leszek(teo)Życzkowski (pl-PL) | Dark Preacher (ru-RU) |
| markh (nl-NL) | Tiago Oliveira (pt-BR) |
| peter3 (sv-SE) | Diego de Carvalho Zimmermann (pt-BR) |
| AlleyKat (da-DK) | Alexandre Rapaki (pt-BR) |
| Hector Zhao, lovelywcm (zh-CN) | Juan Botías (es-ES) |
| Lukáš 'lordfrikk' Kucharczyk (cs-CZ) | Álvaro G. Vicario (es-ES) |
| Michal Kec (cs-CZ) | Andriy Zhouck (uk-UA) |
| ReinekeFux (de-DE) | Hisateru Tanaka (ja-JP) |
| Benedikt Langens (de-DE) | Mohsen Shadroo (fa-IR) |
| Sebastian Zartner (de-DE) | Eduard Babayan (hy-AM) |
| l0stintranslation (it-IT) | Eduard Babayan (hy-AM) |
| gonzalopirobutirro (it-IT) | Tomaž Mačus (sl-SI) |
| alexxed (ro-RO) | Stoyan Stefanov (bg) |
| Nicolas Martin (fr-FR) | Alexander Shopov (bg) |
| Franck Marcia (fr-FR) | Kristján Bjarni Guðmundsson (is-IS) |
| gLes (hu-HU) | NGUYỄN Mạnh Hùng (vi-VN) |
| Xavi Ivars - Softcatalà (ca) | Bwah (hr-HR) |
| gezmen (tr-TR) | Sonickydon (el-GR) |
| eternoendless (es-AR) | David Gonzáles (es) |
Try the new Firefox Quantum developer tools in Developer Edition or update to the latest release version. Inside you will find the latest tools like the first CSS Grid inspector and the JavaScript debugger.