A CSS debugging tool that outlines all page elements to help identify and fix layout issues.
Users
1,000
0 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
5
0 in 30 days
Store rank
#28K
#23K among extensions
Version
3.0.0
updated 15 Jul 2025
Users
monthly, 15 months
Latest, 15 Oct 2026:1,000 usersMove the mouse over the chart for any month
Ratings count
monthly, 15 months
Latest, 15 Oct 2026:5 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Pesticide (without hover bar)
Pesticide is a Chrome extension designed to help you visualize the layout and structure of any webpage by outlining every HTML element. It’s a powerful tool for debugging CSS and understanding how elements are nested on the page.
When activated, Pesticide injects custom CSS into the current tab, applying colored outlines to all elements based on their type. This makes it easy to identify spacing, nesting, and potential layout issues at a glance.
✨ Features
✅ One-click toggle to enable or disable visual outlines without needing page reload
🎨 Faithfully reflects the original website's CSS — no hover effects, no color changes, no shadows
🌍 Works on any website
🔐 Built using Manifest V3 for enhanced security and performance
🚫 No interference with site functionality or user interactions
🚀 How to use
1. Install the extension from the Chrome Web Store or load it unpacked
2. Click the Pesticide icon in your toolbar to toggle element outlines
3. Click again to turn them off
Official Website: https://pesticide.michaelkolesidis.com/
Source Code: https://github.com/michaelkolesidis/pesticide-without-hover-bar
Pesticide (without hover bar) is free software licensed under the GNU Affero General Public License v3.0.
Growth
Window
Users
Change
Ratings
Rating
7 days
0
+0.0%
0
0.00
30 days
0
+0.0%
0
0.00
6 months
+123
+14.0%
+1
0.00
1 year
+503
+101.2%
+1
0.00
Chrome Web Store search rankings
Where Pesticide (without hover bar) appears when people search the store, with the 30 day change