I am developing web sites using HTML, and I have seen that Chrome has this great built-in tool called "Inspect Elements" which allows me to see all the HTML elements which are applied by default and their default browser properties.
I was wondering if there is similar add-on for Firefox? Please suggest a good one. BaAsically to inspect and edit HTML.
Firebug. Better than Chrome's! http://getfirebug.com
Download Firebug for FireFox.
http://getfirebug.com/
Firebug is the tool of choice.
Is there a tool that allows to see the whole page oulined in the browser? For example, I have a lot of hidden divs or images, may be overflown by some other elements and I want to see all the elements outlined, just to see what is placed in what place. If you ever used Adobe Illustrator, you could understand what I mean if you switched to outlines mode there by clicking CTRL+Y. I use FireBug now for something like that, but may be there is something more advanced for that?
Try using the Web Developer add-on for Firefox.
It has plenty of tools for this kind of stuff. Although not one exactly as the outline-mode in Illustrator.
IE8 Developer Tools has a "show all DIV elements" option. Press F-12 to open the developer tools window.
I love Firebug plug-in for Firefox. Firebug allows you to navigate around the page, and it will highlight the element you've selected. It's a very powerful tool and it makes it very easy to see how your site hangs together. Plus it's got loads of other debugging tools built into it. If you're developing web sites, you should be using Firebug.
There are similar tools available for other browsers. Recent versions of IE have the "developers tools" built in, though it's not as easy to use or as powerful as Firebug. Chrome and Safari also have a Developers Tools feature, which is quite powerful. Personally I still prefer Firebug, but they are all useful tools.
Hope that helps.
Web-developer on fire-fox has been very helpful for me. I particularly like the outline block elements which has been helpful for me building sound structures and see how my elements are lining up as I go, and view style information that allows you to hover over all of your elements and see the css path.
It sounds like outline block elements would be what you are looking for.
Are there any tools other than Firebug that can help me figure out why my HTML is layed out the way it is? If you list any tools, please add what they can do which Firebug can't.
WebKit's Web Inspector, used by Safari and Chrome.
Opera's Dragonfly
Both do pretty much the same things Firebug does.
I'm usually using both Firebug and Web Inspector. Though I like Firebug more, I had a few errors that I wasn't able to trace using it (they were just listed as errors), but they showed up in Web Inspector.
It doesn't get much mention or much love, but I find Expression Web SuperPreview helpful when trying to debug layout issues.
I only use Firebug for JS debugging, I use Web Developer for Firefox for anything CSS or HTML related.
https://addons.mozilla.org/en-US/firefox/addon/60/
Great for CSS debugging - while Firebug will show you the CSS, Web Dev does it better giving you a nice window with line numbers so you can easily find what needs fixing, plus you can copy and paste from the window.
Shows underlying form information without looking at the source
Outlines various types of elements on the page
Resize the browser window to the common screen resolutions, or to a specified size (love this feature)
I wouldn't say that Web Developer is better than Firebug, just different.
Is there a browser plug-in I can use to help me determine why my tags and css styles don't render the way I expect them to?
It would be really great if I could browse to my test page, and activate a plug in that would show me the dimensions and location of each div box.
Have a look at excellent firefox addon:
FireBug
If you are using Google Chrome, the built-in developer tools are very good. Just right-click on the part of your page you would like to debug and choose "Inspect Element" and the developer tool pane will appear with the selected part of the page highlighted.
use firebug, it's very simple and also good.
Is there anything like Firebug that you can use within Google Chrome?
Essential features I would like:
Inspect HTML source (select elements, delete them, etc.)
check CSS values (the built-in solution is weird, somehow)
There is a Firebug-like tool already built into Chrome. Just right click anywhere on a page and choose "Inspect element" from the menu. Chrome has a graphical tool for debugging (like in Firebug), so you can debug JavaScript. It also does CSS inspection well and can even change CSS rendering on the fly.
For more information, see https://developers.google.com/chrome-developer-tools/
Firebug Lite supports to inspect HTML elements, computed CSS style, and a lot more. Since it's pure JavaScript, it works in many different browsers. Just include the script in your source, or add the bookmarklet to your bookmark bar to include it on any page with a single click.
http://getfirebug.com/lite.html
Just adding some talking points as someone who uses Firebug / Chrome Inspector every day:
At the time of writing, there's only Google DOM inspector and no it doesn't have all the features of Firebug
Inspector is a 'lite' version of Firebug: The interface is not as good IMO, element inspection in both recent versions is now clunky, but Firebug is still better; I find myself trying to find the love for Chrome (since it's a better, faster browser experience), but for development work, it still just sucks for me.
Live preview / modification of DOM / CSS is still way better in Firebug; calculated CSS and box model view are better in Firebug;
Somehow it's just easier to read/use Firebug maybe because of the ease of navigating, manipulating/modifying the document in several key areas? Who knows. I'm used to the interface and I think Chrome Inspector is not as good although this is a subjective thing I admit.
The Cookies/Net tab are extremely useful to me in Firebug. Maybe Chrome Inspector has this now? Last time I checked it did not, because Chrome updates itself in the background without your intervention (gets your consent by default like all good overlords).
Last point: The day that Google Chrome gets a fully-featured Firebug is the day Firefox basically dies for developers because Firefox had 3 years to make Firefox's layout engine Gecko as fast as WebKit and they didn't. Sorry to put it so bluntly but it's the truth.
You see, now everyone wants to move away from Flash in lieu of jQuery motivated by mobile accessibility and interactivity (iPhone, iPad, Android) and JavaScript is 'suddenly' a big deal (that's sarcasm), so that ship has sailed, Firefox. And that makes me sad, as a Mozilla fanperson. Chrome is simply a better browser until Firefox upgrades their JavaScript engine.
F12
I love shortkeys
Try this, it's called Firebug Lite and apparently works with the beta version of Chrome.
You can also find it at:
https://chrome.google.com/extensions/
You can set this bookmarklet in your "Bookmarks Bar" in order to have Firebug lite always available in Chrome/Chromium browser (put this as the URL):
javascript:var firebug=document.createElement('script');firebug.setAttribute('src','http://getfirebug.com/releases/lite/1.2/firebug-lite-compressed.js');document.body.appendChild(firebug);(function(){if(window.firebug.version){firebug.init();}else{setTimeout(arguments.callee);}})();void(firebug);
Or try user scripts: http://dev.chromium.org/developers/design-documents/user-scripts
jQuerify is the perfect extension to embed jQuery into Chrome Console and is as simple as you can imagine. This extension also indicates if jQuery has been already embedded into a page.
This extension is used to embed jQuery into any page you want. It allows to use jQuery in the console shell (You can invoke Chrome console by Ctrl + Shift + j".).
To embed jQuery into the selected tab click on extension button.
The official Firebug Chrome extension or you can download and package the extension yourself.
https://getfirebug.com/releases/lite/chrome/
Well, it is possible to enable Greasemonkey scripts for Google Chrome so maybe there is a way to sort of install Firebug using this method? Firebug Lite would also work, but it's just not the same feeling as using the full featured one :(
willshouse.com/2009/05/29/install-greasemonkey-for-chrome-a-better-guide/
This doesn't answer your question but, in case you missed it, Chris Pederick's Web Developer is now available for Chrome: https://chrome.google.com/extensions/detail/bfbameneiokkgbdmiekhjnmfkcnldhhm.
Forget everything you all needs this browser independent inspector , dom updater
https://goggles.webmaker.org/en-US
just bookmark and go to any webpage and click that bookmark..
this is actually Mozilla project Goggles , amazing amazing amazing...
F12 (only on Linux and Windows)
OR
Ctrl ⇧ I
(⌥ ⌘ I if you're on Mac)
Please try Firebug Lite for Google Chrome
If you are using Chromium on Ubuntu using the nightly ppa, then you should have the chromium-browser-inspector