Pesticide

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A CSS debugging tool that inserts outlines onto all elements to help with debugging layout issues

Latest reviews

• (2025-07-30) Polina Drykova: Pleeeeease revert to the old version. This became horrible and unusable
• (2025-07-17) Karttik Sharma: Please bring back old version.
• (2025-07-01) Imtiaz Hussain: PLEASE BRING BACK THE OLD VERSION.
• (2025-05-28) Rey Mark Pacanza: The new version is so trash that it is NOT USABLE ANYMORE
• (2025-05-19) Iker: Great outliner for the css
• (2025-05-18) Ray Castillo: I am uninstalling because of this new colored blocks layout. Please bring back the old version.
• (2025-05-16) Manoj Kumar P Vishwakarma: felt it is good to use
• (2025-05-13) Nitigya Joshi: New update is too bad. Whats with all the sharp colors. I can hardly see any text. Please rollback the changes.
• (2025-04-29) Ayush Butle: Ctrl key does not work, trash.
• (2025-04-27) Shrey Bansal: Doesn't work anymore
• (2025-04-24) Alief Mukhlis: New update is trash. Bring back the old version
• (2025-04-19) H B: The "Ctrl" key option doesn't work in this new update. Please fix.
• (2025-04-17) Sarang Nayak: I think Angela should provide an alternative to this Chrome pesticide extension; the old version was much better.
• (2025-04-13) Wunna Moe San: This is nothing more than trash now. This used to allow its users to see the div and all necessary info once the users hover on the boxes. But now, not only does that function stop working, but also the background colors make an eyesore to it.
• (2025-04-05) Abdullah Azmat: The different colors shown in div blocks is a mess. Please bring back the older plain version back
• (2025-04-01) Spencer Trumbore: The key feature Angela advertises doesn't even work: Holding CTRL doesn't show you an annotation withe DIV dimensions or any other annotations. Nothing is happening on local OR hosted websites. Yes, I activated all the toggles. Something is broken.
• (2025-03-20) Yale Yang: New version doesn't allow turning off the extension toggle, and the new colors make everything impossible to see. Worked perfectly fine before!
• (2025-03-20) Matt Clagett: NEW VERSION IS GARBAGE. Can't see anything in my UI with these crazy colors
• (2025-03-20) Preetesh Jain: New update is total trash. Why fix what's not broken. Its completely useless now.
• (2025-03-18) Akshansh Vaishnav: Giving three star because of history, absolute disastor update. Invaluable tool before but trash now.
• (2025-03-18) Sumit Bera: very helpful
• (2025-03-17) Anurag Singh: fix the issue with extension toggle.
• (2025-03-16) Keshav Sharma: New version is disaster. Please bring back old one. That was easy to use. Pleaseeee
• (2025-03-16) Abishek: worst
• (2025-03-14) Mohan Krishna: The new version is totally unsuable. atlesat you could have made a toggle switch between two different types layouts.
• (2025-03-13) Travis Moore: Used this plugin a lot but the most recent update was a huge downgrade. It ruined this plugin. The beauty of just having the outlines was its simplicity. Thats what made this plugin great, If I wanted crazy colors Id just use the standard dev tools. I will need to find another alternative now.
• (2025-03-13) 李占宇: I really loved this extension. But the new version with background color looks crazy and makes it almost impossible to debug CSS. Please remove the background color, please, please.
• (2025-03-12) Blair: I really loved this extension. But the new version with background color looks crazy and makes it almost impossible to debug CSS. Please remove the background color, please, please.
• (2025-03-11) Jordan Sweet: For the last 5 years this has been my #1 used extension for CSS troubleshooting. An easy 5/5. I love that it was updated to meet Chrome's extension guidelines but it came with a huge additional change - adding background colors to every element. The background colors make it really hard to see the actual elements of my page. I'm not sure what the intent was with this new change, but it should be an option you can toggle or removed altogether. I will be looking for an alternative that is closer to what Pesticide originally was.
• (2025-03-11) Ahmet Güler: Its not what its used to be after the last changes... I love this tool please revert the changes as much as possible and bring it back.
• (2025-03-10) Jeff Anderson: I found this tool while taking Angela Yu's web development course a couple of years ago. It has been invaluable. Excited to see the update, but I am finding that I cannot turn pesticide off without reloading the page. Also, instead of just colorful lines outlining the structure of the code, there are now background colors which make it tough to see where the "normal" outlines once were. 5 stars for our history together, but please address these issues. Actually uninstalling and re-installing the extension resolved the "cannot turn it off" issue. Background colors remain... This makes it more difficult to see the outlines.
• (2025-03-06) Nick John: Please Bring this extension back, make it valid to the google guidelines
• (2025-03-05) Akshay K Reghu: Why it is removed. This extension was very useful.
• (2025-03-05) Deepak Sharma: Please update this extension this is the most useful extension; I've ever found for frontend development.
• (2025-03-04) Wagner Ona: 10/10 tool. Please update this to follow chrome guidelines 🙏🏼
• (2025-03-03) Ananthan Nex: will you be updating this to fit the new requirements of chrome?
• (2025-03-03) Sujal: made my life easy when understanding layouts. thanks a lot devs
• (2025-02-19) Adam T: amazing css and HTML tool
• (2025-01-21) Alan Wang: still work, good extension for web developer
• (2024-12-12) Tofazzal Hossain: Please update
• (2024-12-08) Montexic: can't open it? as an extension?
• (2024-11-25) Zahit Enes Terzioğlu: Simple and useful.
• (2024-10-06) ROHAN JAGTAP: It is the Quality extension
• (2024-10-05) Yash Raut: It is a great extension
• (2024-10-04) Surinder Singh: Best Extension Ever,
• (2024-10-02) Furqan CG: Best Extension Ever, the reason we use chrome
• (2024-09-29) patunola ibukun: this extension has helped me right from the time i started with my journey in becoming a professional frontend developer. it will be sad to this extension removed from chrome🥲😟☹️😭 i pray the issues can be resolved soon.
• (2024-09-18) Jonah Samuel: I do hope that Google and the developers of this extension can resolve the issue soon enough. Th extension is very helpful and I see no reason why it should be removed from the chrome web store.
• (2024-09-05) maker tolentino: I've been using this for years as a front end developer, it's been incredibly helpful to spot layout and alignment issues, and to see what various elements in the UI are doing. I see that The Chrome Web Store is giving a notice with warning banner, that "This extension may soon no longer be supported because it doesn't follow best practices for Chrome extensions." I hope this can get fixed because it's one of the best browser tools for design and UI work. Thanks London App Brewery team!
• (2024-09-04) Faiez Maalik: Great tool for developers and front end designers including UI/UX teams.