# Firefox Developer Tools Reviews **Vendor:** Mozilla **Category:** [Other Development Software](https://www.g2.com/categories/other-development) **Average Rating:** 4.3/5.0 **Total Reviews:** 18 ## About Firefox Developer Tools Firefox Developer Tools is an integrated suite of web development tools built directly into the Firefox browser, designed to assist developers in inspecting, editing, and debugging web applications efficiently. These tools provide a comprehensive environment for analyzing and optimizing web content, ensuring compatibility and performance across various platforms. Key Features and Functionality: - Page Inspector: Allows developers to examine and modify the HTML and CSS of a webpage, facilitating real-time adjustments and layout troubleshooting. - Web Console: Displays messages logged by a webpage and enables interaction with the page using JavaScript, aiding in the identification and resolution of scripting issues. - JavaScript Debugger: Provides the capability to pause, step through, and inspect JavaScript code execution, essential for diagnosing and fixing complex scripting errors. - Network Monitor: Tracks network requests made by a webpage, offering insights into resource loading times and aiding in performance optimization. - Performance Tools: Analyzes runtime performance to identify bottlenecks, helping developers enhance the responsiveness and efficiency of their applications. - Responsive Design Mode: Simulates different screen sizes and resolutions, allowing developers to test and adapt their designs for various devices. - Accessibility Inspector: Evaluates web content for accessibility issues, ensuring compliance with standards and improving usability for all users. Primary Value and User Solutions: Firefox Developer Tools empower developers to build, test, and refine web applications directly within the browser, streamlining the development workflow. By offering a robust set of debugging and inspection tools, developers can quickly identify and resolve issues related to code, performance, and design. The integration of these tools into the browser eliminates the need for external software, providing a seamless and efficient development experience. Additionally, features like Responsive Design Mode and the Accessibility Inspector ensure that applications are both user-friendly and accessible across a wide range of devices and audiences. ## Firefox Developer Tools Pros & Cons **What users like:** - Users appreciate the **ease of use** of Firefox Developer Tools, finding the interface intuitive for website development. (2 reviews) - Users value the **visual layout tools and intuitive CSS editing** of Firefox Developer Tools, enhancing their website development experience. (2 reviews) - Users appreciate the **clean user interface** of Firefox Developer Tools, enhancing their web development experience with ease and reliability. (2 reviews) - Users find the **initial setup very easy** , enhancing their experience and aiding website development effectively. (1 reviews) - Users value the **reliability and comprehensiveness** of Firefox Developer Tools for efficient web development tasks. (1 reviews) **What users dislike:** - Users experience **slow performance** with Firefox Developer Tools when handling heavy applications, affecting efficiency and usability. (1 reviews) - Users note **debugging and UX polish gaps** in Firefox Developer Tools compared to Chrome, impacting overall experience. (1 reviews) ## Firefox Developer Tools Reviews ### 1. Firefox Developer Tools give me the essentials I need for web development **Rating:** 4.0/5.0 stars **Reviewed by:** Paul B. | Customer Experience Manager, Small-Business (50 or fewer emp.) **Reviewed Date:** October 03, 2025 **What do you like best about Firefox Developer Tools?** These tools cover all the basic needs for inspecting, debugging, and optimizing websites, just like any Chromium-based developer console. I use them daily to edit HTML and CSS live, monitor network activity, profile performance, and test responsiveness across devices. The interface is clean and the features are reliable, making it easy to analyze page structure and troubleshoot issues on the fly. **What do you dislike about Firefox Developer Tools?** As far as for essentials, Firefox Developer Tools always deliver. **What problems is Firefox Developer Tools solving and how is that benefiting you?** Firefox Developer Tools let me work efficiently on web projects, test changes instantly, and keep sites fast and user-friendly. Having a solid set of debugging and inspection tools in Firefox keeps development smooth and productive. ### 2. Visual Layout Tools, But Debugging Needs Polish **Rating:** 4.5/5.0 stars **Reviewed by:** geekskai_dot_com i. | Front-end Development Engineer, Small-Business (50 or fewer emp.) **Reviewed Date:** December 14, 2025 **What do you like best about Firefox Developer Tools?** I like how Firefox Developer Tools assisted in the development of my website geekskai.com by providing a lot of resources and tips to guide me through the process. I appreciate the layout and CSS tools, particularly how visual the layout tools are and how direct the CSS editing workflow feels. Additionally, the initial setup was very easy. **What do you dislike about Firefox Developer Tools?** Two areas feel weaker than the strengths: performance/robustness on heavy apps, and some gaps in debugging and UX polish compared to Chrome. **What problems is Firefox Developer Tools solving and how is that benefiting you?** Firefox Developer Tools assisted in developing my website geekskai.com by providing resources and tips that guided me through the process. ### 3. Dev Tools **Rating:** 3.5/5.0 stars **Reviewed by:** Verified User in Information Technology and Services | Small-Business (50 or fewer emp.) **Reviewed Date:** April 02, 2022 **What do you like best about Firefox Developer Tools?** Easy to search things. Bookmarks that appear on the home page provides ease to access frequent sites. **What do you dislike about Firefox Developer Tools?** Good amount of memory is used by the browser instance, should be using much less memory than it uses today. **What problems is Firefox Developer Tools solving and how is that benefiting you?** I am using dev tools to identify web elements for my automation learning. ### 4. Phenomenal web development tools with awesome privacy controls **Rating:** 5.0/5.0 stars **Reviewed by:** JJ J. | Cloud Solution Architect, Enterprise (> 1000 emp.) **Reviewed Date:** August 10, 2021 **What do you like best about Firefox Developer Tools?** I started using browser-based developer tools with Firebug back in the day and then eventually cut over to use Chrome tools. However, after Firefox came out with its focus on privacy, I started using it again. And I'm happy to say that it's at parity with Chrome in this area. **What do you dislike about Firefox Developer Tools?** Honestly, there's nothing to dislike about Mozilla developer tools. **What problems is Firefox Developer Tools solving and how is that benefiting you?** Easing development efforts. JS debugging, CORS issues, and API checking are amongst the items. ### 5. Great Tool **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Information Technology and Services | Enterprise (> 1000 emp.) **Reviewed Date:** August 10, 2021 **What do you like best about Firefox Developer Tools?** Firefox Developer Tools is a helpful web code inspection tool; I like that it has many different functions, and the layout is very logical and comfortable. **What do you dislike about Firefox Developer Tools?** It lags a little behind some of its competitors in terms of pure functionality; updates are not as frequent as one would like. **Recommendations to others considering Firefox Developer Tools:** It is a worthwhile try to use this tool for web code inspection / editing. It's not for everyone, but it is worth checking out. **What problems is Firefox Developer Tools solving and how is that benefiting you?** I use Firefox developer tools as a way to inspect and edit web code, it is one of my go to tools when I am working on a web based project. The strong and clean design / layout is something that has benefited productivity. ### 6. Complete tools for Frontend Testing **Rating:** 4.5/5.0 stars **Reviewed by:** Samet D. | Araştırma Görevlisi, Computer Software, Small-Business (50 or fewer emp.) **Reviewed Date:** September 14, 2020 **What do you like best about Firefox Developer Tools?** You can use it for what you want to change on a website css and you can understands to result of changing code. Every changes applies runtime. Also there are network analysis, javascript consol and performance logger. **What do you dislike about Firefox Developer Tools?** There is nothing that i dislike. I like to use firefox developer tools. **Recommendations to others considering Firefox Developer Tools:** You can also use Chrome tools but i think firefox tools are easier to using. **What problems is Firefox Developer Tools solving and how is that benefiting you?** There may sometimes be problems while you are developing web ux. With firefox developer tools you can analize code, make changes and see if it works or not at runtime. ### 7. Firefox Developer Tools are necessary, but they're also great **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Higher Education | Mid-Market (51-1000 emp.) **Reviewed Date:** March 26, 2020 **What do you like best about Firefox Developer Tools?** I don't know if you can come up with something I like 'best'. They're all necessary, they all work, they're all intuitive. **What do you dislike about Firefox Developer Tools?** The only thing it doesn't do is fix your code for you, if that can even be a criticism. There's really nothing to dislike. It does exactly what it promises, does it well, and it's incredibly easy to use. **Recommendations to others considering Firefox Developer Tools:** Firefox is a great browser, try it if you've been using Chrome for awhile. Firefox is great, give it a try. The developer tools in particular are great and can help you pinpoint a ton of things to make your website better. Whether it's CSS, JS, SSL validation, Firefox developer tools will tell you what you need to know. **What problems is Firefox Developer Tools solving and how is that benefiting you?** If there's anything wrong with your website (and the site loads) these tools are helpful. If I need to get granular with JS and CSS, that's what these are for. I've found out what's wrong when having issues with JS, CSS, SSL certificates, and a whole host of other errors. ### 8. Firefox Developer Tools Review **Rating:** 3.5/5.0 stars **Reviewed by:** Verified User in Government Administration | Small-Business (50 or fewer emp.) **Reviewed Date:** August 04, 2020 **What do you like best about Firefox Developer Tools?** The simplicity of the system for both the user and developer. **What do you dislike about Firefox Developer Tools?** Browser while using the tools would crash now and again. **What problems is Firefox Developer Tools solving and how is that benefiting you?** Quick and efficient to use during the workday. ### 9. The best debugging tool for your web apps **Rating:** 5.0/5.0 stars **Reviewed by:** Oscar C. | Consultor Tecnologico , Small-Business (50 or fewer emp.) **Reviewed Date:** June 19, 2019 **What do you like best about Firefox Developer Tools?** The new interface. Mozilla connects a home run with the new firefox developers edition, which includes the full-featured Firefox Developers tools. The Dark theme it does not tire your eyes when you're passing a lot of time debugging your app. In addition, it has a lot of improved features, such as the style editor, the responsive view and the new option of Valence add-on, which allows you to connect the Firefox developer tools to other browsers (for example Safari on iOS) **What do you dislike about Firefox Developer Tools?** There really is nothing that I dislike, the update is perfect and very complete. I love it **Recommendations to others considering Firefox Developer Tools:** It's incredible, it's really worth trying, and once you do, you can not leave it. **What problems is Firefox Developer Tools solving and how is that benefiting you?** With firefox developers tools, the job of finding errors or checking if the design is responsive or not is extremely easy. It is a tool that includes everything you need in one place, plus its new developer browser is really great. It has helped make my job easier and less stressful with its black interface ### 10. Life Saver for Developer **Rating:** 5.0/5.0 stars **Reviewed by:** Pruthvi P. | Software Engineer, Enterprise (> 1000 emp.) **Reviewed Date:** June 24, 2019 **What do you like best about Firefox Developer Tools?** Every developer or QA should get this tool. It is really life saving for all developers. I am a backend developer but this tool provides me a way to debug and look JavaScript in the browser without pulling my hair out. Not only devs and QA but I had support staff, they used this tool to find some of the data from front end. I debug my JS or angular. You can inspect element and can know current html. I favorite one is you can see the actual method code in the browser. **What do you dislike about Firefox Developer Tools?** For the first time use, you need to get familiar with mapping of code with the browser. **Recommendations to others considering Firefox Developer Tools:** Best tool for developers and QA. Everyone is tech industry should learn how to use this Firefox Developer tool. **What problems is Firefox Developer Tools solving and how is that benefiting you?** Sometimes, it can be hard for new developer. There is no any particular training to get familiar with this tool. I had my colleagues who show me how to use it. So if they give link to training video or tutorial whenever user open Firefox developer tools for the first time. ### 11. Easily one of the most intuitive web apps **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Architecture & Planning | Small-Business (50 or fewer emp.) **Reviewed Date:** June 22, 2019 **What do you like best about Firefox Developer Tools?** You can always examine and debug HTML and JavaScript on your mobile device! This in itself was a huge plus to me! The Network Monitor and Responsive design mode are a charm, which I found myself using often. Visualizing changes to your website or app real-time was one of my "must have" features and I couldn't imagine tasks without this. **What do you dislike about Firefox Developer Tools?** As far as any negative comments, I'm glad to say I have none. It's been excellent from the interface to the abilities so far so no complaints from me **What problems is Firefox Developer Tools solving and how is that benefiting you?** My personal favorite feature, Responsive Design Mode allow you to view your website and inspect how it performs across different platforms, OS, etc. Again, found myself using this a multitude of times, proving it's ease of use. With this, I can roll out changes or edits quicker, and certainly more efficiently. ### 12. A necessity for testing cross browser and general issues with Websites **Rating:** 4.0/5.0 stars **Reviewed by:** Tim D. | Network Administrator, Small-Business (50 or fewer emp.) **Reviewed Date:** June 20, 2019 **What do you like best about Firefox Developer Tools?** Ease of use and how it is integrated with FF and other tools. I know it will be added to and enhanced moving forward to integrate with more systems/utils. **What do you dislike about Firefox Developer Tools?** How late to the game, one might say, they are to the developer tools system. I know I used other 3rd party tools previous to this, but I prefer one from the creator(s) to be the one I use. Less updating. But now here it is. **What problems is Firefox Developer Tools solving and how is that benefiting you?** Getting better with setting up my HTML/CSS/PHP scripting. Along with realizing the benefits are similar and more useful than other browser systems. ### 13. Useful for UX development **Rating:** 3.5/5.0 stars **Reviewed by:** Verified User in Consumer Services | Enterprise (> 1000 emp.) **Reviewed Date:** June 20, 2019 **What do you like best about Firefox Developer Tools?** Compared to other browser-based tools, it is likely the most user friendly. There is little need to configure beyond the default setup, but has the ability to add on. **What do you dislike about Firefox Developer Tools?** My biggest complaint would be the hard to utilize media tools to mimic using alternate devices. This is something that Chrome dev tools excels at. **What problems is Firefox Developer Tools solving and how is that benefiting you?** I typically use this tool mostly for cross browser comparability issues. The main benefit other than the cross-browser benefit is being able to easily save files referenced in sites. ### 14. Website Customization At Runtime **Rating:** 4.0/5.0 stars **Reviewed by:** Rajat P. | System Specialist, Small-Business (50 or fewer emp.) **Reviewed Date:** June 19, 2019 **What do you like best about Firefox Developer Tools?** This tool provides facilities to customize the website at run time. To use/ create css or js at runtime. Most important is its open source and better font rendering + inbuild cookie manager. **What do you dislike about Firefox Developer Tools?** The main disadvantage is its speed and no integration with built-in tool like spell checker , dictionary etc. **What problems is Firefox Developer Tools solving and how is that benefiting you?** Great tool to use in any of the website. ### 15. Great features and clean layout **Rating:** 5.0/5.0 stars **Reviewed by:** Coleman R. | Full Stack Web Developer, Internet, Mid-Market (51-1000 emp.) **Reviewed Date:** June 19, 2019 **What do you like best about Firefox Developer Tools?** I'm a big fan of the layout tools included with firefox, as well as being able to use dark mode **What do you dislike about Firefox Developer Tools?** The only downside to Firefox is that it can be a bit strict when it comes to web errors and warnings, aside from that, no complaints **Recommendations to others considering Firefox Developer Tools:** Turn on dark mode! **What problems is Firefox Developer Tools solving and how is that benefiting you?** Building and developing web applications has been great with firefox ### 16. Love it for debugging and writing code on the fly! **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Fund-Raising | Mid-Market (51-1000 emp.) **Reviewed Date:** June 19, 2019 **What do you like best about Firefox Developer Tools?** Once I learned how to use Firefox’s native dev tools, responsive CSS became 1,000x easier. Watching live results in the browser has helped me cut down my time spent publishing/refreshing/recoding at least tenfold! **What do you dislike about Firefox Developer Tools?** I honestly just wish the dev community around FF was as well versed and established as Chrome. During research, there is way more troubleshooting and advice offered around Chrome than FF. **Recommendations to others considering Firefox Developer Tools:** I recommend using FF dev tools alongside of each common browser for accessibility purposes when writing code for best results. **What problems is Firefox Developer Tools solving and how is that benefiting you?** Mainly in-progress html/css related work for Wordpress theme customization. ### 17. We love devtools **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Computer Software | Small-Business (50 or fewer emp.) **Reviewed Date:** September 28, 2019 **What do you like best about Firefox Developer Tools?** I love how many options there are for page inspection **What do you dislike about Firefox Developer Tools?** It can slow down the page when in use but not too bad **What problems is Firefox Developer Tools solving and how is that benefiting you?** As a web developer I use dev tools to find and solve problems ### 18. My favorite for layout related points **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Computer Software | Enterprise (> 1000 emp.) **Reviewed Date:** June 25, 2019 **What do you like best about Firefox Developer Tools?** Anything related to the layout and finding issues with CSS. **What do you dislike about Firefox Developer Tools?** I prefer the console of Chrome for everything related to javascript. **What problems is Firefox Developer Tools solving and how is that benefiting you?** Troubleshooting ui issues with web development. ## Firefox Developer Tools Discussions - [What features does Firefox have?](https://www.g2.com/discussions/firefox-developer-tools-what-features-does-firefox-have) - [What are developer tools used for?](https://www.g2.com/discussions/what-are-developer-tools-used-for) - [What is Firefox dev tools?](https://www.g2.com/discussions/what-is-firefox-dev-tools) - [What is special about Firefox Developer Edition?](https://www.g2.com/discussions/what-is-special-about-firefox-developer-edition) - [Google Chrome Developper Tools is fast Why?](https://www.g2.com/discussions/12057-google-chrome-developper-tools-is-fast-why) - 2 upvotes - [View Firefox Developer Tools pricing details and edition comparison](https://www.g2.com/products/firefox-developer-tools/reviews?section=pricing&secure%5Bexpires_at%5D=2026-05-21+07%3A06%3A57+-0500&secure%5Bsession_id%5D=d15416f5-df48-4780-b9f8-d5e560d9b157&secure%5Btoken%5D=f7d1407190937130e289ff10a2737e6f04ca2ca335555ccbe0771bc3974c3f74&format=llm_user) ## Top Firefox Developer Tools Alternatives - [Okta](https://www.g2.com/products/okta/reviews) - 4.5/5.0 (1,199 reviews) - [Termius](https://www.g2.com/products/termius/reviews) - 4.8/5.0 (254 reviews) - [SAP Fiori](https://www.g2.com/products/sap-fiori/reviews) - 4.3/5.0 (128 reviews)