Firefox Developer Console








	Many addons also exist, including Firebug. Edge's F12 Emulation. The Console Tool. Clear browser cache with a single click or via the F9 key. What it shows is not limited to a single window. Show split console adds a section at the bottom of the tools showing the console. The official Firefox DevTools account. After the installation of the Modify Headers extension in Firefox, you can see a new button in the toolbar. This may be done externally to Firefox or through Firefox. I used to use Chrome a lot and something I found useful for finding images on a page was the "Sources" tab in Chrome. Developer tools are potent; they have many features. All commands, which you pass to Web Console, executed using that user account. Firefox Developer Tools - Can't Show Nodes In Inspector. How To Disable F12 Shortcut Developer Tools In FirefoxHow To Open The Developer Console Airtable SupportHow To Use Browser Developer ToolsYashints Firefox Developer Tools Can Do ThatYashints Firefox Developer Tools Can Do ThatFirefox Toggle Developer […]. The extension is available for Chrome, Firefox and Opera, and will run on any platform that these browsers support including Windows, macOS and Linux. Or if you can open it by going to the Tools menu > Web Developer > Inspector, this will open the developer tool in page inspector mode. There is a large difference between Firefox mobile <=10 and Firefox for Android >=14. 	I'm not a web developer, though I have coded some HTML and CSS while coding ASP. RESTClient has been completely rewritten for compatible with Firefox 57. You can use the Console to:. It allows developers to edit HTML and CSS on a page. Some sites serve different themes, CSS, content, or even different sites to different browsers and OS’s, and many developers often need to change their own user agent to be. See Troubleshooting: DevTools is not detecting the Android device for more help. I run the Firefox Dev Editons on Windows OS using English language. Configuration settings for Firefox. Indeed I had to switch workspace to make it work, but I couln't even open the developer console. Firefox 68 was released on July 9, 2019. " In the Developer Tools, find an element with a display: grid; declaration and click the icon. Click on the Content icon at the top of the Option window. If you want to block or allow all of Google's crawlers from accessing some of your content, you can do this by specifying Googlebot as the user. Use TweetDeck to discover and curate content, and Twitter for Websites and Twitter Kit to easily distribute and display those Tweets in your apps. Firefox' Responsive Design View. Both Firefox and Chrome have pages with information and advanced settings that are available from the address bar by entering “about:X”, where X stands for a variety of possibilities. #47: Chrome DevTools This browser add-on for Chrome lets you edit any page on the fly. Firefox Nightly. Browser's developer tools can be used to inspect, edit and debug HTML, CSS, and JavaScript of the curently-loaded page. We build products like Firefox to promote choice and transparency and give people more control over their lives online. 		For bugs in Firefox DevTools, the developer tools within the Firefox web browser. To close the Console click the Close button found on the right hand side of the Consoles menu bar. Settings apply whenever the user signs in to Chrome with their managed account, on any device. Browsers 'Ctr + F' does not works. Firefox Developer Edition traz mais uma alternativa de navegador que utiliza o Firefox como base de funcionamento. ? Those three are huge. This may be done externally to Firefox or through Firefox. Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, PHP, Python, Bootstrap, Java and XML. Latest News. com) and password. Firefox Quantum made Firefox fast again, but speed is only part of the story. Firefox Dev Tools will execute the code within the context and scope of the current breakpoint. The Mozilla Developer Roadshow Talks: Firefox, WebAssembly, CSS, WebXR and More The Mozilla Developer Roadshow program launched in 2017 with the goal of bringing expert speakers and web technology updates to local communities through free events and partnerships. Apple has brought its expertise in OS X and iOS Safari Development Tools. A ton of work has gone into making Firefox an exceptional tool for creating on the Web. This is what it does:. Debugging JavaScript in Firefox. Browsers Developer Tools. We’re calling it version 0. 	Now try typing console. As with console. If the name doesn't exist, then a new window is opened and the specified resource is loaded into its browsing context. Call the page in the Chrome Browser on, you get the information you want to. 0 is English; but Firefox Dev Editons version 58. The built-in User Agent tester is available via Developer Tools which you can access from top right 'hamburger' menu (go to 'More Tools' >> 'Developer Tools. Open Firefox through the Profile Manager (process described above, or set the development profile as default during extension development). The Developer Toolbar was an alternate command repl input in the Firefox Developer tools, apart from the Web Console. The ellipsis menu on the right-hand side of Developer Tools, contains several commands that let you perform actions or change tool settings. Give us feedback that will determine what makes it to Final Release and help shape the future of Firefox. From the menu, select "More tools". Using Developer Tools on Android Mobile Chrome Firefox Favorite You can use Chrome Canary's Developer Tools on your Mac to debug public and locally hosted websites on your Android device, allowing you access on your mobile phone to all of Chrome Developer Tools' extensive feature set. It allows developers to edit HTML and CSS on a page. I just fixed my developer console. Firefox Developer Tools Description: Examine, edit, and debug HTML, CSS, and JavaScript on the desktop and on mobile. 2016-09-19 Web Scraping Andrew B. firefox-dev. 		I do not see this option. Chrome: developer console To the developers-to open the console, you can use two key combinations. A screenshot of the current document will be downloaded to your downloads directory. Enable the Java Console in the Java Control Panel. Chrome DevTools is a set of web developer tools built directly into the Google Chrome browser. Amazon Services and APIs allow you to monetize your apps, engage with users, build immersive experiences and test the apps and games you've built. New to Oracle Community? Be sure to check out our FAQ and read through the Community Guidelines. I have found a few suggestion of running firefox as part of a Visual Studio project in debug mode but that would be too much detail for me and I am not interested in putting break points etc. A ton of work has gone into making Firefox an exceptional tool for creating on the Web. Don't submit the same data twice - Data and requests are shared between old and new Search Console, no need to submit them in both. Advice and answers from the Disqus Team. You can also select the add-on’s options from the Firefox context menu. I say “was” because as of Firefox 62, it has been removed. For example, execute id command in the Web Console and you will see current user account information. Click Developer Tools in the wrench menu, tools, and Developer Tools. Modifying the page from the Console is possible because the Console has full access to the page's window. Firefox Developer Edition features the latest changes and development tools you need to build for the web. In that blog, we compared performance of the Salesforce Console in a number of browsers: Internet Explorer 7/8/9, Chrome and Firefox. If you find yourself running the same code in the Console repeatedly, consider saving the code as a Snippet instead. 	The Browser Console is for the entirety of the Firefox browser. Does the Network Monitoring component of the Firefox Developer Tools have a way to preserve its log upon navigation (which would otherwise be cleared), similar to the Chrome or Safari Developer Tools "Preserve log upon navigation" button?. To access the Web, you need a web browser, such as Netscape Navigator, Microsoft Internet Explorer or Mozilla Firefox. Composr is a powerful and flexible CMS, with an emphasis on building social, dynamic, and interactive websites. They can either be typed into a command box (Start-> Run) or through your browser's address bar (you can normally create links to them as you would web page links). How to disable paste protection in Mozilla Firefox Developer Console? I have noticed that in recent versions of Mozilla Firefox there is a super, super annoying bug that disables pastes into the developer console. And since I work with several different screen widths, I like the Inspector at the bottom of the screen. To be clear, our problem is not with our cross-domain setup. Let's dive into the changes coming in Firefox 58, currently available to preview in Firefox Developer Edition. Open the Developer tools by right clicking on a blank area and then selecting the Inspect Element option. We're calling it version 0. Note: In Chrome's dev tools, there is a "console" tab. So, what browser do you all prefer to use and why?. リリース直前の機能を最も安定したプレリリース版ビルドでテストできます。. The Web Developer extension adds various web developer tools to a browser. Alternative method: Press either CTRL + SHIFT + I or F12 to open the Developer Tools. Firefox Developer Edition. 		To access the JavaScript console in Chrome, click the More icon at the top right of your browser window, select More tools Developer Tools, then click Console. 2016-09-19 Web Scraping Andrew B. /firefox -profilemanager. Then you’ll find a new toolbar at the top of the browser as in the snapshot below. The Web Developer Toolbar lets you inspect and edit (in real-time) the HTML and CSS of your page, so you can see what's happening when things don't line up. Firefox Quantum: Developer Edition also includes a ton of refined, redesigned, and brand new developer tools. In a regular Firefox tab, navigate to a resource in question (e. I was testing out Firefox Developer Edition today and noticed that while I could initially execute code in the javascript console, when I set a breakpoint in the javascript and started stepping through code, the console would become inactive (I can type in it, but pressing "enter" results in a newline instead of issuing the command) until I. Safari Web Inspector. The latest Tweets from Firefox DevTools (@FirefoxDevTools). Yesterday I explained how you can use the Developer Console to take screenshots of the active web page, and before that, I explained how to use it to manage add-ons and change Firefox preferences. It’s a good thing that other developers have built some fabulous tools to help you find and squash those pesky bugs. [7] Its innovative graphical interface made the World Wide Web system easy to use and thus more accessible to the average person. enabled to true. Firefox Browser Developer Edition The browser made for developers All the latest developer tools in beta, plus experimental features like the Multi-line Console Editor and WebSocket Inspector. Now click the Magnifying Glass icon in the lower left corner of Chrome, hover your mouse over the page headline and double-click the selected. " In the Developer Tools, find an element with a display: grid; declaration and click the icon. 	Firefox Developer Tools - Can't Show Nodes In Inspector. The “Console” Tab can be used to interact with our web pages in real time using JavaScript. To access the developer tools in Firefox, use the Tools > Web Developer > Web Console menu. The Web console now shows more information about CSS warnings, including a node list of the DOM elements that used the rule (bug 1093953). In Firefox Developer Edition 50, the console now shows the stack trace that led to a network request in HTTP log message. Thanks Darran, that is the link I needed. I'm trying to move from Chrome Dev Tools to Firefox (27. If any Firefox developer sees this, please stop implementing features that makes developers go mad. To access the Web, you need a web browser, such as Netscape Navigator, Microsoft Internet Explorer or Mozilla Firefox. CloudKit Dashboard. Every tool which is in the developer edition is already in the regular edition. The Web Developer extension adds various web developer tools to a browser. The look and feel of Firefox Developer Edition is slightly different from the main release, but it's nothing to get too excited about; it's mainly just the color scheme. Try Usersnap for free!. Only thing that's kind of annoying is editing existing functions, for the reasons stated in my question. InformationWeek, serving the information needs of the Business Technology Community. 		Firebase - Sign in - Google Accounts. The console. One of the quickest means for exact specifications had been by using a bookmarklet. The primary new feature in Selenium 2. To learn more, check out the browser's own manual for developer tools: Chrome DevTools. Firefox has a responsive design view that encourages you to stop thinking in terms of specific devices and instead explore how your design changes at common screen sizes or your own size by dragging the edges. Firefox developer edition is generally based on the latest beta (so you can test sites before the official version is released), but I believe it also has a few extra items enabled by default related to the developer tools. I could already hide them in Chrome, Safari, and IE, so Firefox was the last remaining puzzle piece. In the video above, in the second. Using Developer Tools on Android Mobile Chrome Firefox Favorite You can use Chrome Canary's Developer Tools on your Mac to debug public and locally hosted websites on your Android device, allowing you access on your mobile phone to all of Chrome Developer Tools' extensive feature set. Join a community of developers, attend meetups, and collaborate online. Firefox Developer Edition features the latest changes and development tools you need to build for the web. I cleared cache and cookies problem persists. My firefox version is: 32. This is a great opportunity to tell you about what the DevTools team has been up to since our last major update back in March. Composr provides features for blogging, running a forum, providing downloads, hosting galleries, serving your own databases, eCommerce, and much more. 	Click Firefox Settings at the top-right of your browser window (older versions click the Tools menu) and click on the Options menu item. Finally, select "Web. The Developer Network Tools opens as a docked panel at the side or bottom of Firefox. Many of your favorite websites rely on special functionality to animate menus and play sounds. This will bring up a console window in the browser window. For some reason, if I enter manually the url for my instance if the developer console, the developer console open successfully, after that all I had to do it switching workspace. How to open Dev tool (Developer Tools or Console) in Mozilla Firefox #console #mozilla #firefox #devtool. your online bank). Few months back firefox launched its developer edition, so I switched to FF developer edition. HTML5 Databases. In the Firefox and Safari Developer Tools, the dock option can be found in the top left next to the close button is the option to undock the tools in to a new window. console object. Open the browser. Debugging the Internet Explorer Driver In order to get detailed information from IEDriverServer. Most of the time, using the browser’s developer tools, you’ll be able to click on the JavaScript file that has logged it to open it and debug it. Modifying the page from the Console is possible because the Console has full access to the page's window. For many, May is the time of year for big hats, brightly colored. Using the Console to change the page's title. 		1, running on Ubuntu 18. You can also select the add-on’s options from the Firefox context menu. As part of that process, Firefox is switching extensions from the original “XPI” format, to a newer, more widely adopted “Web Extension” mechanism. For administrators who manage Chrome policies from the Google Admin console. All of us are very familiar with the browser named “Mozilla Firefox”. Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, PHP, Python, Bootstrap, Java and XML. We're calling it version 0. Press Ctrl+Shift+J - this will open console window. After opening the browser console, you can start looking for errors. So, what browser do you all prefer to use and why?. The browser basically got the same styles and colors as the developer tools which should give you a quicker access to the developer tools. Click on the Network tab. Click Developer Tools in the wrench menu, tools, and Developer Tools. I understand that I can log to the console when using a Firefox extension with the cfx run command. Opera DevTools. I cleared cache and cookies problem persists. Usage: Click on the Open Menu icon on the top right of your navigation bar, select Developer and click on Inspector from the Menu. 	I'm trying to move from Chrome Dev Tools to Firefox (27. Firefox 57 includes many aspects of this project, so we're calling this release Firefox Quantum. I have a long class with thousand lines of code and need to find some specific text in that class. I have recently known that Firefox has a Browser Console (different than Web Console) which can be enabled setting devtools. So we encourage you to get the latest version of your favorite browser. home page, Toolbox documentation. This is more noticeable in some browsers (e. 6, a "Java Console " extension will appear in the Add-ons Manager for each installed version of Java (in previous Firefox versions, these extensions were hidden). It is OK to admit. Firefox 68 was released on July 9, 2019. Click the Menu icon in the browser toolbar, and then click Developer > Toggle Tools. The Web Developer extension adds various web developer tools to a browser. I do not see this option. For administrators who manage Chrome policies from the Google Admin console. Refreshing sometimes works on Firefox. Firefox's Web Developer section includes tools for designers, developers, and testers alike such as a style editor and pixel-targeting eyedropper. We’ll go over how to access the Console in Firefox and Chrome. If you are a developer and have built something using our API, we can feature your creation with your credits on this page. Edge's F12 Emulation. 		Expand the Java console option. On my version of Firefox, 61. Google Groups allows you to create and participate in online forums and email-based groups with a rich experience for community conversations. Chrome Browser. For many, May is the time of year for big hats, brightly colored. The “Console” Tab can be used to interact with our web pages in real time using JavaScript. Orange Box Ceo 6,619,433 views. React Developer Tools is a tool that allows you to inspect a React tree, including the component hierarchy, props, state, and more. Enabling the Java Console through the Java icon in the Windows system tray. 6, a "Java Console " extension will appear in the Add-ons Manager for each installed version of Java (in previous Firefox versions, these extensions were hidden). The tutorial will show you how to run Javascript code in Internet Explorer (IE), Chrome, Firefox and Opera browsers on Windows. The contents of this section have been moved to http://docs. It’s great for figuring out what your JavaScript app is up to, but it’s limited to spitting out a minimal amount of information. This site houses links to the documentation, source code repository, issues list and information related to GWT roadmap and release. The Firefox Developer Edition is a modified version of Firefox that is specifically designed for web developers. Selenium Grid Server Configuration Setup Selenium grid lets you tests your scripts on different desktop browsers in parallel. GWT is the official open source project for GWT releases 2. If you're a super administrator and you try to sign in to admin. Opening the Web Console - Firefox Developer Tools | MDN Developer. 	On this page you find tools, add-ons, extensions and applications created for Pastebin. The so-called DOM Explorer tool allows you to do the same things as you would do with the Chrome or Firefox Dev Tools’ element picker. Step 7: Fix the Bug. Step 7: Fix the Bug. Chrome is famous for it's developer console. I understand that I can log to the console when using a Firefox extension with the cfx run command. It features all of the latest Firefox features along with a number of specialist developer tools. Posted on November 8, 2017 in Debugging, Developer Tools, Featured Article, Firefox, Firefox Releases, and Web Developer Toolbox console. The look and feel of Firefox Developer Edition is slightly different from the main release, but it's nothing to get too excited about; it's mainly just the color scheme. Check website safety and enjoy safe browsing online with the No. You can enforce Chrome policies from your Admin console that apply to: User accounts, to sync policies and preferences across a user's devices. The Future of Dev Tools - Opera Next. Run IE, Chrome, Firefox, and other browsers online, right on your desktop or tablet. The HTML and accompanying CSS stylesheet are fully editable once these. No non-developer is in that developer console anyway and if they get tricked into pasting something there it is not your fault. On my version of Firefox, 61. You will be presented with a Firefox warning about the configuration settings. Simulate a slow internet connection in web browsers (Internet Explorer, Firefox, Chrome etc) You can easily simulate a slow internet connection, by using a tool called "fiddler". The beautiful thing about the developer edition is that anyone can use and test it. Opening the Web Console How to start using the Web Console. 		But what I experieced is that, it crashes a lot while debugging JS (angularjs and jquery code) and some times the debugger does not hit at all even though that line of codes are being executed. Display PHP errors & vars dumps in Google Chrome console and notification popups, execute PHP code. We do keep the features of Firefox for Android under review and this may feature in a future update. Marc Andreessen, lead developer of Mosaic and Navigator 1993 was a landmark year with the release of Mosaic , credited as "the world's first popular browser". Indeed I had to switch workspace to make it work, but I couln't even open the developer console. Then go to irc. It can be used to programmatically interact with a page by examining names, roles, and states, listening for events, and performing actions on nodes. Once you're in, watch this handy YouTube video on the functionality of the tools. Web Browsers are software installed on your PC. Then submit the log along with your GitHub. Here you find disable JavaScript under advanced settings. From tools, choose "Developer tools". Contribute. DevTools can help you edit pages on-the-fly and diagnose problems quickly, which ultimately helps you build better websites, faster. Partner Program Developer Groups Built for BlackBerry Apps BlackBerry Builder Support Code Signing Help Developer YouTube Channel Developer Forums Knowledge Base BlackBerry World Sign your app Submitting your app Follow us on: Facebook YouTube Twitter BlackBerry Blogs BBM Channels Legal & Trademarks. 	If it is grey, click it once to start recording. Unfortunately if I have even just a few hundred kb of json, pasting it into the firefox console will freeze the console for several minutes. Check for text that’s the same, or similar, color as the background of the webpage. All of them open up Steam if it is not open. The built-in User Agent tester is available via Developer Tools which you can access from top right 'hamburger' menu (go to 'More Tools' >> 'Developer Tools. Network Stack Trace. The Mozilla Developer Roadshow Talks: Firefox, WebAssembly, CSS, WebXR and More The Mozilla Developer Roadshow program launched in 2017 with the goal of bringing expert speakers and web technology updates to local communities through free events and partnerships. Select Firefox's main menu , represented by three horizontal lines and located in the upper right-hand corner of the browser window. When investigating misconfiguration problems, the first thing to check is whether these settings are intended (the values could have been overriden by flags, extensions, or even other software on the system, and whether Chrome actually fetched the correct settings from the system. GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. User Interface. Aside from that it is a good console, I have a 1080p gaming monitor and bf1 is the best looking game p it I played bf1 on both normal ps4 and then the pro it does look a decent amount better a pc price of this could not bear it and I know that as I am very found of pc gaming so it is great value for money if you can't afford a gaming pc. How you can open the console, we'll explain in this practical tip. logfile to get a hold of Firefox's output to the console. The new screenshot command adds a new syntax to the Web Console of the Firefox browser as commands start with ":". 		Hi there, As a developer I use the Inspector (Tools -> Web Developer -> Inspector) a lot to find DOM-elements. Safari - Click Safari , click Preferences , click the Advanced tab, check the "Show Develop menu in menu bar" box, exit Preferences, click Develop , and click Show Web Inspector. In the developer’s menu, click on Console button and type the following code and click on Enter. While you may run most of these actions from other locations within the browser as well, it is often faster and more convenient to use than those options. Both Firefox and Chrome have pages with information and advanced settings that are available from the address bar by entering “about:X”, where X stands for a variety of possibilities. How To Disable F12 Shortcut Developer Tools In FirefoxHow To Open The Developer Console Airtable SupportHow To Use Browser Developer ToolsYashints Firefox Developer Tools Can Do ThatYashints Firefox Developer Tools Can Do ThatFirefox Toggle Developer […]. Learn More. The beautiful thing about the developer edition is that anyone can use and test it. Chris Pederick's Web Developer extension for the Mozilla Firefox browser is one of the best tools in a web developer's arsenal. Simply by using the Alexa toolbar, every member contributes valuable information about the web, how it's used, what's important and what isn't. Select them and copy to clipboard. tools/contributing. Press ESC (or click on "Show console" in the bottom right corner) to slide the console up. To open the console on Firefox, use the keyboard shortcut ShiftK (on Windows) or OptionK (on Mac). After the installation of the Modify Headers extension in Firefox, you can see a new button in the toolbar. 	To access the developer tools console, click on the Devtools icon on the testing dock. Only thing that's kind of annoying is editing existing functions, for the reasons stated in my question. If you're a super administrator and you try to sign in to admin. Using Firefox 57. Firefox Quantum version 57. Console Console tab. Learn about CSS Grid Layout, Firefox Debugger, and more with the Firefox DevTools playground. Almost all Firefox <=10 documentation is out of date. Open the Developer tools by right clicking on a blank area and then selecting the Inspect Element option. First enabled the developer tools; Safari Preference (or press Command ,). Chrome Developer Tools for Non-Developers. My firefox version is: 32. How to open Dev tool (Developer Tools or Console) in Mozilla Firefox #console #mozilla #. In the upper right of the developer tools window, click options (the small gear icon). Open JavaScript Console of Chrome on Apple Mac OSX. The Web Console can now be moved around or even broken out into a separate window, just like a tab; and the Web Developer Menu concentrates access to the developer tools from the Firefox menu button in one place. To access the Web, you need a web browser, such as Netscape Navigator, Microsoft Internet Explorer or Mozilla Firefox. Google Chrome – Chrome Developer Tools (DevTools) Internet Explorer and Microsoft Edge – F12 Web Developer Tools (as of version 8. Few months back firefox launched its developer edition, so I switched to FF developer edition. developerWorks blogs allow community members to share thoughts and expertise on topics that matter to them, and engage in conversations with each other. 		Google Play Developer Console enables developers to easily publish and distribute their applications directly to users of Android-compatible phones. To see the table's contents, click the table in the sidebar. Firefox has a responsive design view that encourages you to stop thinking in terms of specific devices and instead explore how your design changes at common screen sizes or your own size by dragging the edges. It will look for both regular and developer editions of Firefox; if both are available, it will use the developer edition. It allows you to inspect the React component hierarchies in the Chrome Developer Tools. ? For the items that FireFox+Firebug are missing, you should probably install the Web Developer Toolbar for Firefox. Google does not redirect you to the SSO server. Learn More. ? I tend to install both of those on every machine I own. How about comparing Chrome Dev Tools with the Firefox Developer Edition, I found FF Developer Edition really cool, plus it's black colors work best for long hours of work. com) and password. Created specifically to help jQuery Developers, FireQuery is a collection of jQuery enhancements for developers. Run IE, Chrome, Firefox, and other browsers online, right on your desktop or tablet. This will bring up the developer tool window. There are numerous system-wide commands available that interact with Steam. If any Firefox developer sees this, please stop implementing features that makes developers go mad. Fortunately, newer browsers like Firefox, the Mozilla Suite, Opera 7 and to some degree Internet Explorer 6 give you the option to selectively allow and disallow sites to set cookies. 	Simulate a slow internet connection in web browsers (Internet Explorer, Firefox, Chrome etc) You can easily simulate a slow internet connection, by using a tool called "fiddler". React Developer Tools is a tool that allows you to inspect a React tree, including the component hierarchy, props, state, and more. Using console. Almost all Firefox <=10 documentation is out of date. Since Firefox is a Global project, someone is usually online to answer questions and chat about the project. So most developers have a “favorite” browser and switch to others if a problem is browser-specific. The so-called DOM Explorer tool allows you to do the same things as you would do with the Chrome or Firefox Dev Tools' element picker. Now try typing console. Starting in Firefox 3. 0 is the integration of the WebDriver API. Download Web Developer for Firefox. Normally, you activate debugging in your browser with F12, and select "Console" in the debugger menu. The Web Developer extension adds a toolbar button to the browser with various web developer tools. After acknowledging the Firefox alert, you should see a listing of the configuration preferences. You can open the Firefox Developer Tools from the menu by selecting Tools > Web Developer > Toggle Tools or use the keyboard shortcut Ctrl + Shift + I or F12 on Windows and Linux, or Cmd + Opt + I on macOS. One of the quickest means for exact specifications had been by using a bookmarklet. View all features Just played around with BrowserStack: Quite cool, instant access to a browser in a VM with dev tools. Otherwise follow these steps: Chrome. Firefox Developer Edition is a version of Firefox tailored for developers.