Font Finder
Developer Tools
An easy-to-use font inspector to get CSS styles of the selected element
Users
400K
Rating
4.5
Reviews
228
7D Growth
0|0%
Stable signalNo paid features detectedMedium-risk permissions
Pesticide
A CSS debugging tool that inserts outlines onto all elements to help with debugging layout issues
Users200KCurrent public install base
Rating4.0Store average score
Reviews145Public review volume
Manifest versionV3Extension platform version
7-day growth0Net users gained this week
7-day growth rate0%Relative weekly velocity
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1 assetsPesticide Media preview
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Start
4.03
Latest
4.03
7-day rating change
0.00
2026年7月15日2026年7月21日
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Version2.0.0
ManifestV3
Size24.29KiB
Languages1English
Published
Store updated
Last crawled
English
Overview
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This extension inserts the Pesticide CSS into the current page, outlining each element to better see placement on the page.
This is a forked copy of Pesticide created originally by Adam Morse:
https://github.com/mrmrs/pesticide
This copy of Pesticide is created for students on the Complete Web Development Bootcamp by Dr. Angela Yu.
https://www.udemy.com/course/the-complete-web-development-bootcamp/
Reviews
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Store average score4.0Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average3.7Average computed only from synced review bodies below
Reviews with text100Synced review bodies
Total ratings / reviews145Chrome Web Store public rating/review count
Store average score: 4.0. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.
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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.
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.
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.
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.
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.
Please Bring this extension back, make it valid to the google guidelines
Why it is removed. This extension was very useful.
Please update this extension this is the most useful extension; I've ever found for frontend development.
10/10 tool. Please update this to follow chrome guidelines 🙏🏼
will you be updating this to fit the new requirements of chrome?