# Firefox Developer Edition Reviews **Vendor:** Mozilla **Category:** [Other Development Software](https://www.g2.com/categories/other-development) **Average Rating:** 4.2/5.0 **Total Reviews:** 46 ## About Firefox Developer Edition Popular, powerful web development tool. Inspect HTML, modify style and layout in real-time. Advanced JavaScript debugger for any browser. Analyze network usage & performance. ## Firefox Developer Edition Reviews ### 1. Firefox Developer Edition: IDE-Like DevTools with Exceptional CSS & Performance Insights **Rating:** 4.0/5.0 stars **Reviewed by:** Luca P. | Chief Operations Officer DEQUA Studio | Formerly CTO in MarTech, Marketing and Advertising, Small-Business (50 or fewer emp.) **Reviewed Date:** January 29, 2026 **What do you like best about Firefox Developer Edition?** As a technical leader responsible for overseeing the architecture and delivery of complex web applications, I prioritize tools that offer granular control and introspection over those that simply provide a viewing portal. Firefox Developer Edition distinguishes itself by integrating a suite of diagnostic instruments that function less like a standard browser and more like an Integrated Development Environment (IDE) specifically calibrated for the front-end layer. My appreciation for this platform stems from its robust adherence to web standards and its ability to surface the underlying mechanics of the rendering engine, which is critical for maintaining code quality at scale. The primary asset in my daily workflow is the advanced CSS Layout inspector. In a modern development environment where we rely heavily on CSS Grid and Flexbox for component architecture, the ability to visualize the layout computation is non-negotiable. Firefox’s implementation provides a distinct operational advantage here. When inspecting a grid container, the tool projects a comprehensive overlay that delineates tracks, lines, and area names. This is not merely a visual aid; it is a verification tool that allows me to confirm that the computed layout matches the architectural intent. I frequently use this to audit the structural integrity of our design system components, ensuring that implicit grids are behaving as expected and that  gap  properties are rendering correctly across different viewports. The specificity of the overlay, differentiating between the explicit grid defined in code and the implicit grid created by content flow, reduces the time required to diagnose layout regressions significantly. Furthermore, the “Inactive CSS” diagnostic capability functions effectively as a real-time linter within the browser. In large-scale applications with cascading style sheets that have evolved over years, dead code and conflicting properties are inevitable. This browser proactively identifies properties that have no impact on the rendering pipeline, such as a "top" declaration on a statically positioned element, and flags them immediately. This feature provides an essential feedback loop for my engineering team. It prevents the accumulation of technical debt by ensuring that we are not shipping redundant bytes or illogical style rules. It forces a level of syntactical discipline that standard linters often miss because it understands the runtime context of the element, not just the static text of the file. I also place high value on the specialized animation tooling. The Performance and Animation inspectors offer a level of granularity that allows for the precise tuning of transition physics. Being able to scrub through an animation timeline, isolate specific properties, and manipulate Bézier curves directly in the interface allows for a level of polish that is difficult to achieve through code iteration alone. For performance-critical interactions, having visibility into the frame budget and being able to identify which CSS properties are triggering expensive layout thrashes (versus cheaper composite-only changes) is essential for maintaining the 60fps standard we demand for our user interfaces. The visualization of the main thread activity during these animations helps in pinpointing bottlenecks in our JavaScript execution that may be blocking the rendering pipeline. The Network Monitor is another area where the tool demonstrates its utility for backend integration analysis. While most browsers offer network inspection, the request blocking and editing capabilities here are particularly streamlined. I frequently use the “Edit and Resend” functionality to test API endpoints with modified headers or payloads without needing to switch to an external tool like Postman or CURL. This rapid prototyping of network requests within the context of the authenticated session accelerates the debugging of edge cases, such as race conditions or improper error handling in the frontend client. The ability to throttle network speeds to simulate high-latency environments is also implemented with sufficient accuracy to audit our application’s resilience and loading states under poor connectivity conditions. Finally, the Font Panel offers a level of typographic control that aligns with the increasing complexity of variable fonts. As we move towards more dynamic typography to optimize performance and design flexibility, the ability to manipulate font axes, weight, width, slant, and optical sizing, via a unified interface allows for immediate validation of font files. This eliminates the guesswork often associated with implementing  "font-variation-settings"  in CSS and ensures that the assets we are serving are rendering correctly before we commit the implementation details. **What do you dislike about Firefox Developer Edition?** Despite its technical merits, Firefox Developer Edition is not without significant operational drawbacks that prevent it from being a singular solution for a CTO or a lead engineer. The most pressing issue is the divergence between the Gecko rendering engine and the Blink engine that dominates the global market. While I prefer the debugging tools in Firefox, the reality of our user base statistics dictates that Chromium behavior is the standard. I have encountered several instances where the Firefox implementation of a draft specification differs subtly from Chrome’s, leading to a “false positive” sense of security. I can build a technically perfect layout in Firefox that fails to render identically in Chrome due to sub-pixel rounding differences or varied interpretations of the newer CSS containment specs. This necessitates a redundant validation step in my workflow, forcing me to maintain a secondary browser for final quality assurance, which introduces friction and context switching. Performance resource allocation is another area of concern, particularly when dealing with memory-intensive Single Page Applications (SPAs). In my experience, the memory footprint of Firefox Developer Edition can escalate rapidly when multiple development tools are active simultaneously. When profiling heavy React or Angular applications that manipulate large DOM trees, I have observed a noticeable degradation in responsiveness compared to V8-based counterparts. The garbage collection pauses can sometimes be obtrusive during deep debugging sessions, leading to a stuttering experience that hampers the flow of investigation. For a tool positioned as a high-performance developer edition, this resource overhead is a contradiction that requires constant management of open tabs and active extensions to mitigate. The extension ecosystem, while adequate, lacks the sheer volume and niche utility of the Chrome Web Store. There are specific proprietary extensions for React and Vue dev-tools that often receive updates or bug fixes later on Firefox than on Chrome. In a professional setting where we rely on the latest versions of framework-specific debugging tools, being a version behind or dealing with a less stable port of an extension is a tangible disadvantage. It forces a compromise where I must weigh the superior native tooling of Firefox against the superior third-party ecosystem of Chrome. Lastly, the WebSocket inspection capabilities, while present, often feel less intuitive than I would prefer for debugging real-time applications. Parsing binary frames or filtering complex socket traffic can be cumbersome, and the UI for deep-diving into socket frames does not always scale well with high-throughput streams. For applications heavily reliant on WebSockets or Server-Sent Events, I often find myself reverting to other tools to get a clearer picture of the data stream, which defeats the purpose of an all-in-one developer browser. **What problems is Firefox Developer Edition solving and how is that benefiting you?** The primary problem this platform addresses in my daily operations is the fundamental opacity of the browser rendering process. Standard user agents operate as black boxes that conceal the complex logic of how a visual interface is constructed from code. Firefox Developer Edition dismantles this barrier by providing deep and interactive visualization tools that expose the browser’s internal logic regarding the Box Model and advanced layout systems like Grid and Flexbox. This capability significantly reduces the cognitive load on my engineering team members who are otherwise forced to create complex mental models of how the rendering engine calculates geometry. It effectively eliminates the method of trial and error coding by allowing for precise and visual manipulation of layout properties. This direct manipulation translates immediately to increased operational velocity during the UI implementation phase because developers can see the structural skeleton of the page rather than just the painted pixels. Furthermore, the browser serves as a critical mitigation strategy against accessibility non-compliance within our product suite. The dedicated Accessibility Inspector functions as a core component of the development suite rather than an optional plugin. It allows me to inspect the accessibility tree independently of the standard DOM tree to verify that roles, states, and ARIA properties are correctly exposed to assistive technologies. This solves the significant problem of retroactive auditing by allowing us to validate WCAG compliance during the initial build phase rather than waiting for a QA cycle. We can identify missing labels or incorrect focus orders or semantic errors immediately as we write the code. Integrating this check into the daily development routine drastically reduces the risk of shipping inaccessible products and minimizes the subsequent legal and ethical liabilities associated with exclusionary design. The browser also robustly addresses the challenge of environment isolation in a professional workflow. By operating on a separate profile directory by default, it enforces a strict separation of concerns between personal browsing data and professional development environments. This solves the issue of contaminated testing environments where cached cookies or local storage artifacts or logged-in sessions from a personal account might interfere with the testing of a clean user flow. It guarantees that when I am debugging an authentication sequence or a first-time user experience I am doing so in a pristine state without needing to constantly clear my primary browser’s history or juggle multiple incognito windows. This isolation ensures that our testing environment remains consistent and reproducible which is a critical factor for accurate debugging and quality assurance. Additionally, the tool alleviates the increasing difficulty of responsive design verification in a fragmented device landscape. The Responsive Design Mode is exceptionally robust as it offers more than just simple viewport resizing capabilities. It allows for the precise simulation of Device Pixel Ratios and touch events which solves the problem of testing high-density display rendering on standard development monitors. This capability enables our team to identify issues with image resolution or touch target sizing before we deploy to actual physical devices. It acts as a first line of defense in our cross-device compatibility testing strategy by catching the majority of responsive issues early in the lifecycle where they are significantly cheaper to fix than in production. Finally, it effectively solves the problem of CSS specificity conflicts which are a common source of technical debt in large applications. The ability to trace the cascade in the Computed panel and see exactly which rule is overriding another brings necessary clarity to one of the most confusing aspects of CSS architecture. It prevents the proliferation of important tags and overly specific selectors by exposing the root cause of style conflicts directly in the interface. This transparency leads to a cleaner and more maintainable codebase over time and empowers the team to write more modular and predictable styles that scale with the application. ### 2. Have had a pretty decent experience **Rating:** 3.0/5.0 stars **Reviewed by:** Aniruddha G. | Full-stack Developer, Small-Business (50 or fewer emp.) **Reviewed Date:** February 17, 2024 **What do you like best about Firefox Developer Edition?** Decent browsing experience. Not Chromium. Privacy focused. **What do you dislike about Firefox Developer Edition?** Feels like a blue version of Firefox. Lack of developer specific features makes it a tad disappointing **What problems is Firefox Developer Edition solving and how is that benefiting you?** Solves my browsing requirements ### 3. Firefox Developer Edition is a necessity in my development process. **Rating:** 5.0/5.0 stars **Reviewed by:** Tim C. | Website and Wordpress Developer, Mid-Market (51-1000 emp.) **Reviewed Date:** July 06, 2022 **What do you like best about Firefox Developer Edition?** I find the developer tools in Firefox Developer Edition the most helpful. I love how I can view the flex CSS details of a page, as well as the separate tab where I can view all of the CSS changes I've made to the particular page I'm inspecting. **What do you dislike about Firefox Developer Edition?** The only thing I don't really like is how often it has to be updated, which is understandable because it gets the latest updates and integrations from the development team. Sometimes the page has to be reloaded to get the inspector tools to show correctly. **What problems is Firefox Developer Edition solving and how is that benefiting you?** As mentioned, one of the most useful things about Firefox Developer Edition is the CSS tools included in the developer tools. They're extremely helpful in keeping track of the changes I've made so I can make sure I don't miss anything. ### 4. A handy tool for debugging and developing **Rating:** 5.0/5.0 stars **Reviewed by:** Tamara B. | Technical Content Writer, Small-Business (50 or fewer emp.) **Reviewed Date:** November 25, 2021 **What do you like best about Firefox Developer Edition?** It's straightforward to inspect every line of code and get insight into possible issues. Also, this browser is light, fast, and standard-compliant, so its suggestions are always following the internet's best practices. **What do you dislike about Firefox Developer Edition?** Though I find Firefox Developer Edition a good browser, I mainly use it for developing and testing. It's not my default internet browser: as a Google Workspace user, I find Chrome to be more practical. **Recommendations to others considering Firefox Developer Edition:** Fast, stable and reliable, also standard-compliant. I believe it's the best browser for testing and developing... But do not rely only on it, as it's not the most widely used. **What problems is Firefox Developer Edition solving and how is that benefiting you?** I can easily verify if a website is working correctly: Firefox Developer Edition is my favorite tool to test and check CSS and discover if Javascript is working as expected. Also, privacy mode is active by default, and I don't need to clean the browser history (plus the added security). It's a time-saver. I discovered this software thanks to a former colleague, and now it's part of my set of tools. ### 5. You must use it if you're a developer. A ton of tools at your fingertips **Rating:** 5.0/5.0 stars **Reviewed by:** F. Javier P. | Mobile Team Lead, Small-Business (50 or fewer emp.) **Reviewed Date:** August 24, 2021 **What do you like best about Firefox Developer Edition?** Their tools. Sure, they are very similar to webkit-based developer tools, but this product just was designed to be used by web developers. For example, The inactive-CSS tools, that show you in a gray-ish color the CSS lines that are not getting effect on the current stylesheet. Or its CSS grid helpers. For me, it's just superior to other alternatives (mainly Edge and Chrome) **What do you dislike about Firefox Developer Edition?** I don't really dislike anithyng, it seems like a well rounded product. It is stable enough to be used as your primary web browser. **Recommendations to others considering Firefox Developer Edition:** Use it! You won't regret! Or, at least, give it a try. Plus, it's open-source. The Mozilla Foundation has one of the best communities regarding web development, plus the Mozilla Developer Network, which is an excellent documentation on HTML and CSS. **What problems is Firefox Developer Edition solving and how is that benefiting you?** I'm solving web development problems. I use it alongside my text editor/IDE, to make changes on the fly, and see them as I changed. Benefits: I haven't seen any CSS Grid tool better than this. ### 6. Browser for Developer **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Information Technology and Services | Mid-Market (51-1000 emp.) **Reviewed Date:** August 03, 2022 **What do you like best about Firefox Developer Edition?** The best thing is that it takes less RAM compared to other browsers, making a Developer work faster. **What do you dislike about Firefox Developer Edition?** Sometimes it gives more and more updates, like 3 updates in a single week. **What problems is Firefox Developer Edition solving and how is that benefiting you?** Using Firefox Developer Edition to test the developed projects as well as using it for browsing. ### 7. A great Debugging tool for JS and React Applications **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Computer Software | Small-Business (50 or fewer emp.) **Reviewed Date:** November 01, 2021 **What do you like best about Firefox Developer Edition?** Firefox Developer Edition is amazing at ticking two boxes for developers - it can act as a great tool to debug JS code and view the console, XHR Requests et al. It also acts as a nice lightweight browser that does not take a lot of memory on the computer allowing other applications such as IDE's to run extremely fast. **What do you dislike about Firefox Developer Edition?** Firefox needs to make critical settings such as opening the debugging console and other items such as entering private mode easier to reach. Currently, they are hidden in submenu's which makes developers' life a tad bit harder. **Recommendations to others considering Firefox Developer Edition:** Safari developer edition is another browser that is getting better for JS debugging so that is worth having a look at. **What problems is Firefox Developer Edition solving and how is that benefiting you?** Our team uses firefox developer edition to debug our react based web client and track the network requests sent via the client. ### 8. Web Development finds it home **Rating:** 3.5/5.0 stars **Reviewed by:** Francis O. | Software Engineer, Mid-Market (51-1000 emp.) **Reviewed Date:** February 25, 2022 **What do you like best about Firefox Developer Edition?** By a mile and a million, the Firefox Developer Edition has the best debugging tool that any browser has to offer a developer. Also, the performance is top notch **What do you dislike about Firefox Developer Edition?** The only disadvantage is how bad it works as a default browser. Chances are users won't enjoy making it their default browser because of the limited support for extensions available for other browsers. **What problems is Firefox Developer Edition solving and how is that benefiting you?** Optimizing web page layouts, responsive designs, and debugging front-end work, and mobile-first design. ### 9. Very good platform for web development **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Computer Software | Mid-Market (51-1000 emp.) **Reviewed Date:** June 23, 2021 **What do you like best about Firefox Developer Edition?** Developer Edition has its preferences set with the needs of developers in mind. **What do you dislike about Firefox Developer Edition?** A lot of bugs even for developers. Version needs to be a little bit more stable. **Recommendations to others considering Firefox Developer Edition:** Keep in mind that its a very unstable version, 12 weeks ahead of stable version **What problems is Firefox Developer Edition solving and how is that benefiting you?** New frontend developments for my web applications ### 10. Indispensable resource for developers **Rating:** 4.5/5.0 stars **Reviewed by:** Maria Pia D. | Mary, Small-Business (50 or fewer emp.) **Reviewed Date:** January 07, 2020 **What do you like best about Firefox Developer Edition?** Firefox Developer Edition is the best browser for those developers who need maximum control over all the elements that make up a web application. The system is equipped with a console that allows you to view and analyze the code, correct errors, but most importantly, it allows you to get a real-time preview of the code. **What do you dislike about Firefox Developer Edition?** The appearance of mobile-side control could be improved, as sometimes the changes do not perfectly match what is then displayed in the mobile interface. **Recommendations to others considering Firefox Developer Edition:** I recommend Firefox Developer Edition because it allows you to speed up the processes of creating websites or interfaces in general. It has tools that accelerate creation and is a suite that includes everything you need. **What problems is Firefox Developer Edition solving and how is that benefiting you?** I have maximized the development times of site interfaces, I can easily identify errors, and I can obtain real-time prototypes of site elements. ### 11. Firefox rocks **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Computer Networking | Enterprise (> 1000 emp.) **Reviewed Date:** June 25, 2020 **What do you like best about Firefox Developer Edition?** The simplicity as both a user and developer is why I navigate to Firefox! **What do you dislike about Firefox Developer Edition?** No limitations or areas that need addressing **What problems is Firefox Developer Edition solving and how is that benefiting you?** We are able to code against Firefox to determine the best layout for our website. ### 12. I love the dark theme and the dev tools **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Information Technology and Services | Small-Business (50 or fewer emp.) **Reviewed Date:** November 04, 2019 **What do you like best about Firefox Developer Edition?** Since I'm using this version for developers My developer time has increase. The mobile tools are perfect to check the web de developement and the console is perfectly clear to debug with javascript. **What do you dislike about Firefox Developer Edition?** There is only 1 thing missing and it is also the console, and it is that a prefer to have the texto in writing in the top instead of the bottom **Recommendations to others considering Firefox Developer Edition:** Firefox it is been always there for developers, and does not consume all you ram 🐏 **What problems is Firefox Developer Edition solving and how is that benefiting you?** Sass problems, front end problems like js code. DOM changes and web loading time via the monitor ### 13. It was my favorite browser tool until it was removed. **Rating:** 4.0/5.0 stars **Reviewed by:** Ali Rodrigo H. | Developer, Small-Business (50 or fewer emp.) **Reviewed Date:** November 01, 2018 **What do you like best about Firefox Developer Edition?** Very well. There are quite a few wonderful add-ons for Firebug, similar to the considerable variety of built-in functionalities. However, 9 times out of 10, I simply open the code and can discover the issue without our Firebug. You can remove factors, add factors, and modify elements in the DOM tree or HTML code on the fly. Just FireBugize it. **What do you dislike about Firefox Developer Edition?** Surely I would like them to have a segment that shows the loading time of various factors of the website, such as the knowledge of Google Chrome developers or Firebug has set up a migrator on your website that explains a series of variations between your software and DevTools so you can make the major change smoothly. Occasionally it slows down the browser. The Chrome extension does not have all the super features that should be observed within the Firefox model. **Recommendations to others considering Firefox Developer Edition:** You must not reinstall it. Previously, it became the most effective tool available. The browser's quality debugger has, duration. It may be that you remember using Ghostery before Firebug actually due to the reality that you can use specific browsers and it is nothing for Firefox. **What problems is Firefox Developer Edition solving and how is that benefiting you?** In fact, I just wish Chrome would provide it. Identify the areas of the website that can improve for search engine optimization cost and page updates. It is exceptional for documentation because it can seamlessly expand JavaScript objects or factors in the DOM. Try it: it is an extraordinary debugging tool for Mozilla Firefox. I highly recommend it to all my colleagues and I have noticed that, in my opinion, it is a great feature of the browser to enhance the Internet. ### 14. Very integrated management for development **Rating:** 3.5/5.0 stars **Reviewed by:** Oscar P. | Small-Business (50 or fewer emp.) **Reviewed Date:** September 22, 2018 **What do you like best about Firefox Developer Edition?** Just FireBugize it I am using Firebug, this tool can be of very good quality. The application is useful while you want to view or debug a web page. The function to "upload the rule" has often helped to easily extract the class or ID you want to introduce into a style sheet. Easy and intuitive interface. **What do you dislike about Firefox Developer Edition?** Firebug has set up a migrator on its website that explains a series of variations between its software program and DevTools so that you can make the transfer more smoothly. It can be a bit confusing if improving the Internet is not always your intermediate business. I just wish they had done it for Chrome. You need the ability to recognize extensive fonts or photographic details when examining. Nothing comes to mind. **Recommendations to others considering Firefox Developer Edition:** Try it. This new toolbar of the application launched by Mozilla simply doesn't cut it. However, make sure to test the same Internet task in Google Chrome and Internet Explorer nine+ to ensure they perform well in these types of environments. Bring it down. You might consider using Ghostery before Firebug, actually, because you are able to use distinctive browsers and not just Firefox. **What problems is Firefox Developer Edition solving and how is that benefiting you?** Allows performing functions and modules of JavaScript and jQuery, more robust CSS control and cookies. Very useful. I am able to use Firebug to test if the pixels are working well on the pages we are placing for conversion, redirecting the localization of UX issues on the website and in real-time testing and editing CSS. Great tool for debugging and a necessity for anyone who develops and debugs web content. ### 15. Debugging friend **Rating:** 4.5/5.0 stars **Reviewed by:** Leandro P. | Small-Business (50 or fewer emp.) **Reviewed Date:** October 21, 2018 **What do you like best about Firefox Developer Edition?** It is absolutely the nice browser debugging device. I am not an HTML master, so it's good to have this kind of powerful tool with so many features and options. It is open source and open, you can't beat it. In a completely simple environment, Firebug offers you a wide variety of tools to develop your website. Very good. **What do you dislike about Firefox Developer Edition?** I simply wish they had a phase that shows the loading time of numerous website factors like the Google Chrome development team. It doesn't make me express. It is truly an exceptional tool. That I didn't discover it before me. Sometimes this device causes slowness and blocks my browser. **Recommendations to others considering Firefox Developer Edition:** The first-class browser debugger may have length. Try it. This new toolbar of the application launched by Mozilla simply doesn't cut it. Your only option for legacy Firefox, but redundant through Firefox Developer Edition. Impressive product for any developer using Firefox. Definitely beneficial and clean to put on. **What problems is Firefox Developer Edition solving and how is that benefiting you?** No web developer should be without it. Nothing, use it and many others. Firebug paved the way for improving websites and troubleshooting on the go. All browsers try to provide this as an integrated tool like Siri for iPhone. ### 16. A web developers favorite tool **Rating:** 5.0/5.0 stars **Reviewed by:** inTec M. | Targeted Marketing Specialist, Information Technology and Services, Small-Business (50 or fewer emp.) **Reviewed Date:** November 20, 2018 **What do you like best about Firefox Developer Edition?** The ability to examine and pinpoint problems and particular sections of code for web development and design. **What do you dislike about Firefox Developer Edition?** I wish firebug was available on all browsers including mobile versions. At this time, it is not. **What problems is Firefox Developer Edition solving and how is that benefiting you?** Quickly executing web based projects by utilizing firebug as one of our most powerful and useful tools and debugging techniques. ### 17. Once the best way to work with Firefox **Rating:** 5.0/5.0 stars **Reviewed by:** Lee G. | Freelance Analysis, Design, and Developer pro bono, Sporting Goods, Mid-Market (51-1000 emp.) **Reviewed Date:** November 15, 2017 **What do you like best about Firefox Developer Edition?** For a very long time, Firebug was the only way to debug JavaScript, CSS, and HTML. Then Chrome copied everything Firebug had done for Firefox, and now Firefox itself has released The Developer Edition, and Firebug is dead. **What do you dislike about Firefox Developer Edition?** Firebug is no longer available for the latest Firefoxes. **Recommendations to others considering Firefox Developer Edition:** Your only option for legacy Firefox, but made redundant by Firefox Developer Edition. **What problems is Firefox Developer Edition solving and how is that benefiting you?** Debugging JS, HTML, CSS in legacy Firefox. ### 18. A brilliant tool sails off into the sunset **Rating:** 4.5/5.0 stars **Reviewed by:** Lisa K. | Owner | Principal, Small-Business (50 or fewer emp.) **Reviewed Date:** January 03, 2017 **What do you like best about Firefox Developer Edition?** Firebug has been such a great tool for me over the past several years. Unfortunately, it is no longer being developed and has been replaced by browser-specific developer tools. The things I love about Firebug are what makes me so sad to see it go: the ease of use in inspecting page elements, the error console checker, the image preview ability for linked images, and more. I also enjoyed the fact that Firebug, once activated for a website, remained activated for that site until I turned it off. At the moment, the DevTools don't have this feature, and instead activation is limited to the tab in question regardless of the website. **What do you dislike about Firefox Developer Edition?** Occasionally, Firebug could cause my browser to crash, and if I accidentally opened it in too many tabs, it would slow the browser down to a snail's pace. Of course, the biggest downside is that it's no longer being developed. Firebug has set up a migrator on their site explaining some of the differences between their software and DevTools so you can make the switch more seamlessly. **Recommendations to others considering Firefox Developer Edition:** Unfortunately I do not recommend installing Firebug anymore because it is no longer being developed. Old software will slow your browser down. **What problems is Firefox Developer Edition solving and how is that benefiting you?** Firebug paved the way with live, on-the-fly editing of websites and troubleshooting. There's not a web developer who hasn't made use of it to look under the hood of a website, either to see how something works or to troubleshoot something that's broken. Within seconds of a problem being brought to my attention, I can visit the site, fire up Firebug, and inspect the code to find the problem. Quick and efficient, Firebug made my workday so much easier. ### 19. Still solid for front end debugging **Rating:** 3.0/5.0 stars **Reviewed by:** Verified User in Computer Software | Small-Business (50 or fewer emp.) **Reviewed Date:** November 27, 2017 **What do you like best about Firefox Developer Edition?** What I like best is the capacity to greatly customize console output, including displaying pictures of actual elements under inspection. **What do you dislike about Firefox Developer Edition?** Some of the features are not as easy / enjoyable to use as other competing browser development tools. **What problems is Firefox Developer Edition solving and how is that benefiting you?** While our system’s browser logging will work for any browser, it has been optimized for use with FireBug because of its various useful features. ### 20. Great tool for developers! **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Sporting Goods | Mid-Market (51-1000 emp.) **Reviewed Date:** January 12, 2017 **What do you like best about Firefox Developer Edition?** Being able to look at the code and the website at the same time and diving into the hierarchy of the code easily. Also, being able to change the appearance of the page in real time to make sure that what I am proposing or wanting to change is the correct request. This helps explain requests to developers and other team members that may not be on the same page as you are with changes you would like to have made. **What do you dislike about Firefox Developer Edition?** Sometimes it skips around a little too much for my liking. **Recommendations to others considering Firefox Developer Edition:** Make sure you understand all of the ways you can utilize this tool by either reading up on the software or playing around for a while. It is also great to be able to change the page you are currently on to make sure the changes or recommendations you are requesting are the most thorough request to developers and other team members as possible. **What problems is Firefox Developer Edition solving and how is that benefiting you?** Identifying areas of the website that can be improved for added SEO value and on page improvements. ### 21. Good tool for website developing **Rating:** 5.0/5.0 stars **Reviewed by:** Nico C. | Web Developer, Small-Business (50 or fewer emp.) **Reviewed Date:** October 21, 2016 **What do you like best about Firefox Developer Edition?** In a very simple environment, firebug gives you an awesome number of tools for developing your website. I really appreciate the fact that comes with an huge number of extension to make it very suitable to your needs. **What do you dislike about Firefox Developer Edition?** It doesn't allow mobile emulation nor gives you a chance to simulate slow connection. Sometimes its UX may appear a bit confusing, expecially in CSS and Javascript where at first glance is not very clear how to navigate between files. **Recommendations to others considering Firefox Developer Edition:** Before starting using firebug consider if you really need it. Back in time it was the only available tool. Nowadays most (if not all) browser have their own build-in "developer tools" with similar features. The only real reason I can see to start using firebug is because you need to use one of its extensions (or because you feel very confortable with the UX). **What problems is Firefox Developer Edition solving and how is that benefiting you?** Firebug has a lot of uses. Mostly I used it to see in realtime CSS edits so that I can better figure out what's going on and how to fix broken CSS. Another use id JavaScript debugging, Firebug allows inserting breakpoint and instruction-by-instrucion JavaScript execution. Another very common use is security test, simulating fake AJAX requests to see how the backend behaves. ### 22. The best/beloved/useful tool for Web Development that I use. **Rating:** 5.0/5.0 stars **Reviewed by:** Ignacio S. | CEO, Computer Software, Small-Business (50 or fewer emp.) **Reviewed Date:** October 18, 2016 **What do you like best about Firefox Developer Edition?** Firebug integration with Firefox is awesome. Despite Mozilla Firefox comes with its own Developers Tool, Firebug is a MUST HAVE for every web developer out there. With CSS: You can modify CSS definitions on the fly, How will be seen this H1 in red color? Done, just change it in FireBug, review and write the definitive code in your CSS file, the same if you want to add some margin, padding o change font-size. With JS: FireBug simplifies the benefits of the Javascript console, you can check "console.log" outputs easily but, FireBug really shines with AJAX, and POST responses. This responses are a pain in the #$% if you are using Chrome and its Developers Tool but, in FireBug, you can revise all the responses, even FireBug can format XML and JSON responses for easy reading. FireBug is clearly superior at this task. With HTML: You can remove elements, add elements and modify elements in DOM tree or HTML Code on the fly. Very handle. You are curious about a web site, its code or its CSS? Just FireBugize it. I can't make no one web project without using FireBug. **What do you dislike about Firefox Developer Edition?** Is not easy copy text from CSS box at right inside FireBug window. That's the only thing that I dislike of FireBug. **Recommendations to others considering Firefox Developer Edition:** Is the best tool. It has no competition, it is the best. You will enjoy it. **What problems is Firefox Developer Edition solving and how is that benefiting you?** FireBug is awesome for solving bugs on JavaScript or CSS, also is a fast solution for check bugs on Ajax request or formatting the response data. Is awesome for documentation because you can expand easily JavaScript objects or elements in DOM. ### 23. One of the best tool for WebDevelopment **Rating:** 3.0/5.0 stars **Reviewed by:** Verified User in Information Technology and Services | Enterprise (> 1000 emp.) **Reviewed Date:** July 31, 2017 **What do you like best about Firefox Developer Edition?** Console for easy debugging of javascript, easy to set of breakpoints and decode by inspecting values **What do you dislike about Firefox Developer Edition?** Need ability to know font/image details in depth on inspecting. Copying text of CSS from window is difficult. **What problems is Firefox Developer Edition solving and how is that benefiting you?** web development is easier when using firebug. ### 24. Great tool, very helpful **Rating:** 4.5/5.0 stars **Reviewed by:** Giuseppe A. | WEB & Mobile Team Leader - Innovation & Digital Transformation presso Intralot Italia S.p.A, Mid-Market (51-1000 emp.) **Reviewed Date:** October 21, 2016 **What do you like best about Firefox Developer Edition?** It gives me all the information i'm looking for in a simple way. **What do you dislike about Firefox Developer Edition?** It consume a lot of memory and the debug of javascript should be more simple, but probably is my fault. **Recommendations to others considering Firefox Developer Edition:** I prefer this than development tool of chrome. **What problems is Firefox Developer Edition solving and how is that benefiting you?** It helps to realize javascript and jquery funcions and module, enhanced CSS and cookies management. ### 25. I absolutely rely on Firebug on a daily basis! **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Graphic Design | Mid-Market (51-1000 emp.) **Reviewed Date:** June 16, 2016 **What do you like best about Firefox Developer Edition?** I love being able to edit code directly in the browser without having to make changes to the actual file first. Being able to preview changes and make decisions in a "preview" kind of way makes figuring out the best way to write code possible. The function to "add rule" has often helped to easily pull out the exact class or ID that needs to be added to a style sheet. **What do you dislike about Firefox Developer Edition?** I find the feature for inspecting code while an item is on :hover :focus or :active doesn't work very well, or if it does it is very hit or miss. This is especially frustrating when trying to troubleshoot drop menus in Drupal which can often have a great deal of
's so pin-pointing the exact class/id can be difficult. **Recommendations to others considering Firefox Developer Edition:** Try it! Use it!!! Love it! **What problems is Firefox Developer Edition solving and how is that benefiting you?** As mentioned, I use this feature every day. I recommend it highly to all of my colleagues and have found for me personally it is the best in browser feature for web development. I always keep a Firefox window open specifically for using this product in its best browser, even though I prefer safari and chrome for actual site work. ### 26. Firebug is great for inspecting code on the Firefox platform **Rating:** 2.5/5.0 stars **Reviewed by:** Henry P. | Digital Art Director, Marketing and Advertising, Small-Business (50 or fewer emp.) **Reviewed Date:** March 28, 2016 **What do you like best about Firefox Developer Edition?** The "click an element to inspect" option is amazing. I wish that same feature was implemented in google chrome's developer tools. I also really appreciate how elements on the page get highlighted when you rollover the corresponding code **What do you dislike about Firefox Developer Edition?** I really wish they had a section that displays the load time of various webpage elements like google chrome's developer tools. I Also wish they had a section that allowed you to extract video and image assets from a page much like developer tools allows you to do. If these two issue were rectified I would use firebug as my primary debugging platform rather that just use it for debugging specifically in firefox **Recommendations to others considering Firefox Developer Edition:** Its great if you only want to debug in the firefox browser- however chrome's developer tools has more features. **What problems is Firefox Developer Edition solving and how is that benefiting you?** Its really fantastic for debugging website errors that specifically occur in the firefox browser ### 27. Was my favorite browser tool until it was phased out **Rating:** 0.0/5.0 stars **Reviewed by:** Verified User in Information Technology and Services | Mid-Market (51-1000 emp.) **Reviewed Date:** December 29, 2016 **What do you like best about Firefox Developer Edition?** To me it was the best browser tool hands down. It seemed easier to use and better labor or that Google Chome developer toolbar. **What do you dislike about Firefox Developer Edition?** That it is no longer supported by Mozilla's latezt browser update. This was a huge blow to my productivity. **Recommendations to others considering Firefox Developer Edition:** Bring it back. This new Mozilla launched application toolbar just doesn't cut it. **What problems is Firefox Developer Edition solving and how is that benefiting you?** Website UX troubleshooting and real time testing and on the fly CSS edits. ### 28. Firebug Review **Rating:** 3.5/5.0 stars **Reviewed by:** Verified User in Marketing and Advertising | Mid-Market (51-1000 emp.) **Reviewed Date:** October 18, 2016 **What do you like best about Firefox Developer Edition?** Firebug was very simple to download and implement on Firefox. It automatically turns on whenever the browser is open. **What do you dislike about Firefox Developer Edition?** I prefer using Google Chrome so the fact that you can only use it on Firefox isn't ideal. **Recommendations to others considering Firefox Developer Edition:** I would consider using Ghostery before Firebug simply because of the fact you're able to use different browsers and aren't stuff to just Firefox. It offers the same technology. **What problems is Firefox Developer Edition solving and how is that benefiting you?** I'm able to use Firebug to test if pixels are firing properly on pages we are placing for conversion, retargeting track. etc. ### 29. A "must have" for web front-end developer **Rating:** 5.0/5.0 stars **Reviewed by:** Js L. | Software Engineer, Small-Business (50 or fewer emp.) **Reviewed Date:** April 19, 2016 **What do you like best about Firefox Developer Edition?** Debug of JavaScript, HTTP request & response headers, manipulate cookies, instant update of html & css **What do you dislike about Firefox Developer Edition?** When open it up, it cover up about 30-40% of the screen **Recommendations to others considering Firefox Developer Edition:** Firebug can helps to find out what JavaScript error, checkout the CSS style, manipulate cookie, check for HTTP requests, debug AJAX call. **What problems is Firefox Developer Edition solving and how is that benefiting you?** Web development. Without Firebug, is pretty hard to find out what error is JavaScript currently occur ### 30. Now included in Firefox! **Rating:** 2.5/5.0 stars **Reviewed by:** Alexander P. | CEO, co-founder, chief developer, Information Technology and Services, Small-Business (50 or fewer emp.) **Reviewed Date:** March 23, 2016 **What do you like best about Firefox Developer Edition?** I've used to use Firebug a lot back in 2010. It was really a novelty tool at that time. It isn't really special nowadays, though. The good news are — many of its features are now a part of the Firefox Developer Tools, all thanks to the Firebug team! **What do you dislike about Firefox Developer Edition?** Although Firebug was powerful, its design seemed a bit 2000ish — not really bad, but just a bit old-styled. **What problems is Firefox Developer Edition solving and how is that benefiting you?** Firebur is a general purpose web debugging and development suite, so I used it on a day to day basis. It helps to test HTML markup and Javascript code in the real website environment, so it is an invaluable tool for anything Web-related. ### 31. Awesome tool to get page and object details in web page **Rating:** 5.0/5.0 stars **Reviewed by:** Suresh B. | Automation Architect, Mid-Market (51-1000 emp.) **Reviewed Date:** May 28, 2015 **What do you like best about Firefox Developer Edition?** I am ab Automation Developer, working with web-based application to automate them for testing. i am using firebug, this tool is very nice . It is really have helps job of me very much. Examples - - getting sort form of XPath is very easy with fire bug which to get manually will take lots of time. - we can edit CSS, Javascripts etc in run time. - Monitor cpu consumption while working - validate Cookies. - **What do you dislike about Firefox Developer Edition?** Some times this tool cause slowness and crashes my browser, **Recommendations to others considering Firefox Developer Edition:** Please try once then you will be use to of this tool. **What problems is Firefox Developer Edition solving and how is that benefiting you?** We are Automating our applications via selenium web-driver, this tool is very useful to get details of the objects. ### 32. Really nice peoduct **Rating:** 4.0/5.0 stars **Reviewed by:** Gayatri N. | Associate Software Engineer, Information Technology and Services, Small-Business (50 or fewer emp.) **Reviewed Date:** July 29, 2015 **What do you like best about Firefox Developer Edition?** The best part is u can completely change ir html and chk it den and der on the browser.. It is very easy to chek the network tab for monitoring the request and response.. **What do you dislike about Firefox Developer Edition?** Nothing as such. Quite satisfied with the reoduct. **What problems is Firefox Developer Edition solving and how is that benefiting you?** I have used it for creating web applications. it reduces my time of rework and also gives a medium to monitor the request and responses easily. ### 33. Great tool for a tester who likes to debug **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Retail | Enterprise (> 1000 emp.) **Reviewed Date:** May 19, 2015 **What do you like best about Firefox Developer Edition?** It provides a great view into the technical aspects f the system which is essential for a tester/analyst like me. **What do you dislike about Firefox Developer Edition?** some times it gets confusing with too many options and i think the official documentation needs some more updating. **What problems is Firefox Developer Edition solving and how is that benefiting you?** Trying to analyze and debug the issues before moving onto raising defect with developers. ### 34. Fantastic Tool **Rating:** 4.5/5.0 stars **Reviewed by:** Daniel J. | Marketing Operations Manager, Computer Software, Enterprise (> 1000 emp.) **Reviewed Date:** July 23, 2013 **What do you like best about Firefox Developer Edition?** Firebug is a great tool for debugging and analyzing HTML and CSS. I am no HTML master, so it is nice to have such a powerful tool with so many features and options. If you can't figure out where a style is coming from, Firebug can help. If you're getting a JavaScript error, Firebug will help, Warnings, debugging, or cookie problems, Firebug will help! I love Firebug. **What do you dislike about Firefox Developer Edition?** Nothing, this is an incredibly versatile tool. **Recommendations to others considering Firefox Developer Edition:** There are other options in Chrome that just aren't as good or full-featured as Firebug. I would highly recommend using it even if you don't normally using Firefox. It's worth it. ### 35. Nicely integrated control for web development **Rating:** 4.0/5.0 stars **Reviewed by:** Stefan B. | sr. BIM Manager, Information Services, Enterprise (> 1000 emp.) **Reviewed Date:** February 28, 2014 **What do you like best about Firefox Developer Edition?** Directly integrated int eh browser. Easy to tweak pages, without having to commit changes directly. **What do you dislike about Firefox Developer Edition?** The lite version that I use has some limitations. Can be a bit confusing if web development is not your core business. **Recommendations to others considering Firefox Developer Edition:** Recommended for quick tweaks, before you commit actual changes. **What problems is Firefox Developer Edition solving and how is that benefiting you?** Tweaking CSS on the fly or making minor HTML edits for testing ### 36. One of the only reasons I still use Firefox **Rating:** 4.5/5.0 stars **Reviewed by:** Jon J. | UX Designer, Design, Mid-Market (51-1000 emp.) **Reviewed Date:** July 17, 2013 **What do you like best about Firefox Developer Edition?** Being able to find out exactly how big that image is, or how exactly this or that website is building something. Firebug is the reason chrome created "inspect element" however firebug still has a better interface and a few better designed options. **What do you dislike about Firefox Developer Edition?** Just wish they made it for chrome. :-) Inspect element just doesn't quite cut it for me. **Recommendations to others considering Firefox Developer Edition:** it's a must. very useful. very easy to install. ### 37. Great debugging tool **Rating:** 3.0/5.0 stars **Reviewed by:** Verified User in Computer Software | Small-Business (50 or fewer emp.) **Reviewed Date:** July 24, 2013 **What do you like best about Firefox Developer Edition?** Have used Firebug on a few occasions in the past, and it definitely helped identify issues in my code. But 9 times out of 10, I just open the code and can identify the issue without Firebug. So not something I use very often. **What do you dislike about Firefox Developer Edition?** Nothing. **Recommendations to others considering Firefox Developer Edition:** Definitely useful and easy to install. **What problems is Firefox Developer Edition solving and how is that benefiting you?** N/A ### 38. Excellent Javascript debugging tool **Rating:** 5.0/5.0 stars **Reviewed by:** Daniel L. | President and COO, Computer Software, Small-Business (50 or fewer emp.) **Reviewed Date:** June 06, 2013 **What do you like best about Firefox Developer Edition?** I can easily walk through the DOM, or set breakpoints in JavaScript to find out what is going wrong in a web deployment. It is a free tool, and looks like Google Chrome's and IE10's debuggers look to be mirroring the functionality that was here first. **What do you dislike about Firefox Developer Edition?** Nothing comes to mind...it is very powerful. **Recommendations to others considering Firefox Developer Edition:** Try it out - it is a great debugging tool for Mozilla Firefox. However, make sure to try out the same web project in Google Chrome and Internet Explorer 9+ to ensure they behave fine in all these environments. ### 39. Relied on FF **Rating:** 2.0/5.0 stars **Reviewed by:** Ruban K. | Founder, Small-Business (50 or fewer emp.) **Reviewed Date:** June 23, 2013 **What do you like best about Firefox Developer Edition?** Easy HTML,CSS and Javascript debugging tool for all level of users. Infact, you can learn HTML by debugging any element of a web page. It's intuitive way of debugging has also been deployed on Chrome browser as a default option. Soon, IE included it too. **What do you dislike about Firefox Developer Edition?** It sometimes slows the browser down. **Recommendations to others considering Firefox Developer Edition:** You don't have to install it anymore. All browsers are trying to offer this as a built-in tool (like Siri for iPhone). ### 40. Go-to for coding **Rating:** 4.5/5.0 stars **Reviewed by:** Charysse S. | Lecturer, Education Management **Reviewed Date:** July 29, 2013 **What do you like best about Firefox Developer Edition?** It's a great product for checking coding issues and debugging HTML. I wish it came with Chrome. Oh well. **What do you dislike about Firefox Developer Edition?** Nothing. It's really a great tool. **Recommendations to others considering Firefox Developer Edition:** Get it. It's good. I really just wish Chrome offered it. ### 41. Excellent Add-On Tool for Firefox **Rating:** 5.0/5.0 stars **Reviewed by:** Eric M. | Director Of Technology, Mid-Market (51-1000 emp.) **Reviewed Date:** April 09, 2013 **What do you like best about Firefox Developer Edition?** This has to be the best debugging tool out there. I use an online customizable software solution for our company and this has been a life saver so many times. **What do you dislike about Firefox Developer Edition?** That I did not discover it sooner than I did! **Recommendations to others considering Firefox Developer Edition:** Awesome product for any developer out that that uses Firefox. ### 42. Debugging Friend **Rating:** 4.5/5.0 stars **Reviewed by:** Dustin G. | Senior Business Systems Analyst, Banking, Enterprise (> 1000 emp.) **Reviewed Date:** January 17, 2013 **What do you like best about Firefox Developer Edition?** This is quite honestly one of the best browser tools for web developer out there. There are a lot of great add-ons for Firebug in addition to the vast array of built-in functionality. **What do you dislike about Firefox Developer Edition?** While Firebug is available for both Firefox and Google Chrome. The Chrome extension does not have all of the great features to be found in the Firefox version. **Recommendations to others considering Firefox Developer Edition:** Great tool for debugging and a must for any one developing and debugging web content. ### 43. Fantastic Browser Extension **Rating:** 4.0/5.0 stars **Reviewed by:** Bobby H. | Marketing Manager, Information Technology and Services, Small-Business (50 or fewer emp.) **Reviewed Date:** July 19, 2013 **What do you like best about Firefox Developer Edition?** It allows me to check HTML code instantly on any webpage I'm building. Easy interface and intuitive. **What do you dislike about Firefox Developer Edition?** Nothing, works well and does what I need it to. **Recommendations to others considering Firefox Developer Edition:** Nothing, use it. ### 44. Great debugging tool **Rating:** 5.0/5.0 stars **Reviewed by:** Greg M. | Senior Consultant, Internet, Mid-Market (51-1000 emp.) **Reviewed Date:** March 10, 2013 **What do you like best about Firefox Developer Edition?** An excellent tool for Firefox. The go-to application when you need to inspect/debug a web page. And best of all, it costs nothing. **What do you dislike about Firefox Developer Edition?** It doesn't make me coffee? **Recommendations to others considering Firefox Developer Edition:** No web developer should be without it. ### 45. I can't imagine doing my job without firebug **Rating:** 5.0/5.0 stars **Reviewed by:** Jared T. | Solutions Architect, Enterprise (> 1000 emp.) **Reviewed Date:** February 16, 2013 **What do you like best about Firefox Developer Edition?** Its simply the best browser debugging tool there is. I write experimental javascript in the console, I find my js and css errors with firebug on the live page. I prefer using Chrome but I still use firefox because of firebug (the firebug lite version for Chrome falls short). It's free and open source, you cannot beat it. **What do you dislike about Firefox Developer Edition?** Using it in the browser can slow performance, but it is worth the trouble. **Recommendations to others considering Firefox Developer Edition:** The best browser debugger there is, period. ### 46. Great Debugging Tool **Rating:** 5.0/5.0 stars **Reviewed by:** Peter B. | Director, Enterprise Solution Architect, Mid-Market (51-1000 emp.) **Reviewed Date:** February 08, 2013 **What do you like best about Firefox Developer Edition?** Great debugging tool with Firefox. I used it extensively during our BigMachines implementation. Works great when trying to figure out what's wrong with your code. It's free! **What do you dislike about Firefox Developer Edition?** I have no dislikes for this product. It works great with Firefox. **Recommendations to others considering Firefox Developer Edition:** Definitley give it a try when you are trying to debug web code. I have not tried it with Chrome, but with Firefox you will not be dissappointed at all. Go for it. ## Firefox Developer Edition Discussions - [What is Firefox dev tools?](https://www.g2.com/discussions/firefox-developer-edition-what-is-firefox-dev-tools) - [How do I use Firefox Developer Edition?](https://www.g2.com/discussions/how-do-i-use-firefox-developer-edition) - [Is Firefox Developer Edition fast?](https://www.g2.com/discussions/is-firefox-developer-edition-fast) - [What is special about Firefox Developer Edition?](https://www.g2.com/discussions/firefox-developer-edition-what-is-special-about-firefox-developer-edition) - [View Firefox Developer Edition pricing details and edition comparison](https://www.g2.com/products/firefox-developer-edition/reviews?section=pricing&secure%5Bexpires_at%5D=2026-06-01+08%3A58%3A22+-0500&secure%5Bsession_id%5D=f484e5f6-cee6-4f55-9b78-dab254679082&secure%5Btoken%5D=a06dec6f6db6689788229c1daa3c0be8e523619fe0d47086969485c324cb4bb0&format=llm_user) ## Top Firefox Developer Edition Alternatives - [Okta](https://www.g2.com/products/okta/reviews) - 4.5/5.0 (1,202 reviews) - [Termius](https://www.g2.com/products/termius/reviews) - 4.8/5.0 (255 reviews) - [SAP Fiori](https://www.g2.com/products/sap-fiori/reviews) - 4.3/5.0 (128 reviews)