- Firebug integrates with Firefox to put a wealth of web development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page. Firebug is always just a keystroke away, but it never gets in your way.
- FireBug is a Firefox extension that allows you to monitor and tinker with JavaScript, CSS, HTML, and Ajax through a combination of a powerful debugger, error console, command line, and code inspectors.
Firebug, the Firefox extension for live debugging and monitoring CSS, HTML, and Javascript of any website, is a free and open source.
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.
Firebug is a Mozilla Firefox extension. You can install the Firefox extension into your Firefox browser and view the CSS files.
While Firebug is particularly popular among developers and testers, it can prove to be a great tool for learners and newbies too.
If you are wondering how to get started, don’t worry. In this article, we’ll see how you can install and use the various options of Firefox. Additionally, we’ll see how you can use firebug to customize your WordPress theme with custom CSS.
Here’s how you can Install Firebug:
There are two ways of installing Firebug
Here’s how you can Install Firebug:
There are two ways of installing Firebug
- Open Firefox, go to Tools > Add-ons > Get Add-ons and then search for firebug. Now click on Install. Restart Firefox after installing.
- Or, you can go to getfirebug.com and click on “Install Firebug for Firefox” button.
Using Firebug
The short cut key to view the Firebug windows is “F12”. Or alternatively, you can also click on the firebug icon from the status window.
The short cut key to view the Firebug windows is “F12”. Or alternatively, you can also click on the firebug icon from the status window.
Inspecting Element:
This is the most powerful feature of firebug. Through this, you can directly get the source of that particular element. You can know all about that element, which style sheet is it using, which links its pointing to, what HTML is it using, etc. Inspecting about an element means knowing all about that particular selection.
This is the most powerful feature of firebug. Through this, you can directly get the source of that particular element. You can know all about that element, which style sheet is it using, which links its pointing to, what HTML is it using, etc. Inspecting about an element means knowing all about that particular selection.
To inspect an element simply right click on the element which you want to inspect and click on “Inspect Element with Firebug”. Or you can also press “F12” and click on the “inspect” icon and then move your mouse to any element and then you’ll be able to see a blue rectangle surrounding that element and its code in the firebug window.
You can edit the text or experiment with the coding here only and the changes will be displayed on the website directly. Also, you can select any line and click on “Edit” and a new window will open where you can further edit that code or text.
However, to confirm changes, you will have to copy the experimental code from the Firebug window and replace the code in the actual code file. Same with CSS. Firebug enables you to find the CSS class and the name and location of the CSS file that you need to edit to make changes in the selected elements. You can try out the changes real time and view a live preview of the changes taking effect. To finalize the changes, you’ll have to open the CSS file using the path of the file, locate the class and then make the required changes.
Here you can minutely change each and every element you wish. Editing in this window is too easy.
CSS Window:
Notice the Style window in the right side. It shows you which CSS file is being used by this element. Just hover the mouse over style.css and you can also know about its location. There’s even the option to copy the path to the location of the CSS file and access it easily.
Notice the Style window in the right side. It shows you which CSS file is being used by this element. Just hover the mouse over style.css and you can also know about its location. There’s even the option to copy the path to the location of the CSS file and access it easily.
Layout:
In the HTML window, click on “layout”. This is a very useful feature to see the measurements of the navigation window and to know about padding, border, and margin of a website. Below is an example.
In the HTML window, click on “layout”. This is a very useful feature to see the measurements of the navigation window and to know about padding, border, and margin of a website. Below is an example.
Console window:
If you want to use the good old command line for javascript, then you can also do that. To open it click on “Console” in the firebug window.
If you want to use the good old command line for javascript, then you can also do that. To open it click on “Console” in the firebug window.
Now you can edit the javascript from this window. It also has many other functions like autocomplete, automatic resizing, copying the code, hyperlinking to object, etc. You can also debug errors in this window.
Net window:
Want to know which elements of your webpage are slowing the user experience? This small nifty tool will show you each and every detail of the loading time. Maybe you forgot to compress the images or the javascript is taking ages to load, this tool will show you everything.
Want to know which elements of your webpage are slowing the user experience? This small nifty tool will show you each and every detail of the loading time. Maybe you forgot to compress the images or the javascript is taking ages to load, this tool will show you everything.
If you just want to know about the loading time of images, then click on “Images” and it will show you just the loading time of images on your web page.
This way you can know which files are taking a long time to load. You can also know about loading time of HTML, CSS, and Javascript. This feature is very useful to speed up the website and to find out the problems. You can also examine HTTP headers, or you can know if the website is using cache effectively, etc.
This way you can know which files are taking a long time to load. You can also know about loading time of HTML, CSS, and Javascript. This feature is very useful to speed up the website and to find out the problems. You can also examine HTTP headers, or you can know if the website is using cache effectively, etc.
Uses of Firebug
Firebug is a lightweight and easy to use plugin, for monitoring/modifying your web project file. For a programmer or a web designer, there are numerous ways firebug proves to be helpful.
Below are a few situations where you can use firebug to help you with the development or modification of your web project.
Below are a few situations where you can use firebug to help you with the development or modification of your web project.
To change the layout and customization settings
Use firebug to find out the name of the CSS file that controls the appearance of a certain screen element. Firebug provides you with the complete path and the CSS class of that contains the code that affects.
Use firebug to find out the name of the CSS file that controls the appearance of a certain screen element. Firebug provides you with the complete path and the CSS class of that contains the code that affects.
Find image paths
If you’re not sure where the image on the screen comes from. Let Firebug help you find it. Also, if you want to resize an image, you can first try it with firebug and check what dimensions work best. Once you find the ideal height and width, you can apply it to the required CSS files.
If you’re not sure where the image on the screen comes from. Let Firebug help you find it. Also, if you want to resize an image, you can first try it with firebug and check what dimensions work best. Once you find the ideal height and width, you can apply it to the required CSS files.
To discover the HTML codes
Planning to restructure the elements on your web page. Use firebug to inspect the elements and the edit HTML option to try out changes in the appearance of your website.
Planning to restructure the elements on your web page. Use firebug to inspect the elements and the edit HTML option to try out changes in the appearance of your website.
To find out the javascript
Problems with the javascript on your website. Use firebug to get a report on the errors in .js files.
Problems with the javascript on your website. Use firebug to get a report on the errors in .js files.
Edit as HTML option
Want to modify/change the HTML code of the website, or want to see the HTML of any website, you can do so very easily.
Want to modify/change the HTML code of the website, or want to see the HTML of any website, you can do so very easily.
Install Firebug Firefox
Try out modifications on fly
If you want to try out new colors, new formatting for your website and want a preview of how it will look, you can use Firebug to see the reflection of changes you are going to make.
If you want to try out new colors, new formatting for your website and want a preview of how it will look, you can use Firebug to see the reflection of changes you are going to make.
Firebug lite: For browsers other than Firefox
Firebug is built for Firefox but what if you’re using some other browser. Firebug lite is the solution. Firebug lite integrates with browsers like Internet Explorer, Opera, Chrome, and Safari.
There are a few features in firebug that you won’t find in firebug lite, but it can still be very useful for your basic code monitoring.
Through this firebug plugin, you can edit live websites, preview how it looks, inspect the elements and do just about everything you wish to. This plugin is a real solution to web developer’s problems. Worth a try, isn’t it?
Firebug For Firefox Mac
Before launching any new website, feature, or upgrade, it has to be tested. The worst nightmare of any programmer, designer, or business is to launch a broken website that drives away users and hurts reputations. It will only create more work, more headaches, and lost profits.
Luckily, there are many great tools for web development testing. These tools test everything from CSS validation to website speed. Making sure that users and customers have a problem-free experience should be the goal of any website. These tools are the final step in that process.
![Firebug Firefox For Mac Firebug Firefox For Mac](https://firefx.ru/wp-content/uploads/2019/01/Firebug-dlya-Firefox.png)
1. WebSitePulse Test Tools
Want a fast test for response time, file size, and links? WebSitePulse Test Tools provides a series of quick and easy-to-use tests that graph out everything from website speed to link errors. It also provides numbers on file sizes, redirect speed, and DNS.
2. XenoCode Browser Sandbox
Browser testing is one of the most tedious and frustrating parts of web development. What designer or programmer hasn't screamed bloody murder at broken alignments in Internet Explorer 6? One of the difficult parts of browser testing is that no developer can have every browser type on a single computer for proper testing.
Enter XenoCode Browser Sandbox, a series of virtual applications that can run all popular browsers simultaneously. It does not even require the installation of software. However, XenoCode's Browser Sandbox can be heavy in some browsers and is still lacking in a Mac version.
3. Firebug Firefox Extension
The favorite extension of programmers everywhere, Firebug is one of the best applications around for debugging issues with front-end code and CSS. If there's any image or style that's out of line, checking it out with Firebug is the best response. It's even possible to change styles within the extension to see how a website will actually appear in the browser.
4. Load Impact
Install Firebug
If a website goes viral and Digg, Twitter, and StumbleUpon all converge on it at once, will it be able to handle the stress? Load Impact helps answer that question. It simulates large userload on web servers to determine whether or not they can handle the high traffic load. It comes with a free version and several paid versions.
5. Safari Web Inspector
One of the gems of Apple's Safari web browser is its Web Inspector feature. Web Inspector, only available after turning on the development tab, displays stylesheets, images, and scripts on any webpage. However, the most useful part of Web Inspector is its Network feature, which shows in real-time the order and speed in which documents and scripts transfer from the server to the browser. Use it to find which scripts, files, or images are placing the most strain on browsers. Then fix it.
6. Web Developer Firefox Extension
Web Developer is a robust Firefox extension that no developer should be without when testing a website. It provides a wide range of tests, including testing for broken images, testing layouts in multiple screen sizes, viewing cookie information, and validating mark-up. It's the ultimate testing companion for Firefox users.
7. W3C Validation Services
W3C is THE standard in all of web validation. The W3C Validator looks into the markup of any website and display errors based on industry standards. It comes in over a dozen languages and a dozen varieties. Here are some of the most important validators:
- W3C Markup Validation - W3C CSS Validation - W3C mobileOK Checker - W3C Link Checker - W3C Feed Validation Service
These tools are designed to make websites as fast and bug-free as possible by detecting problems early. At the very least, they will let a developer know whether or not he or she needs to scream at Internet Explorer 6 for a while.
Firefox Firebug Addon
Image courtesy of iStockphoto, karimhesham
Firebug For Mozilla
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