Render Observer icon

Render Observer

by Light · Developer Tools
Manifest V3 Free
View in Chrome Web Store Data as of 16 Oct 2026

Visualize DOM mutations to identify unnecessary renders

Users
48
0 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#110K
#92K among extensions
Version
1.0
updated 19 Mar 2025

Users

monthly, 2 years
02754Mar 2025Jan 2026Oct 2026
Latest, 16 Oct 2026: 48 usersMove the mouse over the chart for any month

Ratings count

monthly, 2 years
001Mar 2025Jan 2026Oct 2026
Latest, 16 Oct 2026: 0 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 Render Observer

# 🔍 Render Observer Illuminate your DOM mutations with style! Render Observer is a sleek browser extension that helps you catch unnecessary re-renders in real-time by visualizing DOM changes with elegant highlights. ## ✨ Features - **Real-time Visualization**: Watch your DOM mutations come to life with customizable highlights - **Smart Detection**: Tracks additions, removals, and attribute changes in the DOM tree - **Performance Friendly**: Intelligent filtering to avoid noise from minor updates - **Fully Customizable**: - Choose your highlight colors 🎨 - Adjust border styles and widths - Set custom highlight durations - Configure ignored selectors ## 🚀 Perfect for - Frontend Developers debugging render issues - Performance optimization wizards - React/Vue/Angular developers hunting for unnecessary re-renders - Anyone curious about how their web apps mutate the DOM ## 🛠️ Usage 1. Install the extension 2. Click the extension icon to open the control panel 3. Toggle visualization on/off 4. Watch as DOM changes light up your page! ## 🎯 Pro Tips - Use URL patterns to auto-enable on specific sites - Customize highlight colors to distinguish between different types of mutations - Adjust duration and style to match your debugging needs - Check the console for additional insights ## 🌟 Why Render Observer? Unlike traditional debugging tools, Render Observer brings a visual dimension to DOM mutations. Instead of digging through console logs or dev tools, see exactly what's changing in real-time. It's like having x-ray vision for your web app! ## 🤝 Contributing Found a bug? Have a cool idea? Contributions are welcome! Check out our GitHub repository to get started. ## 📜 License MIT - Go wild! 🎉

Growth

WindowUsersChangeRatingsRating
7 days0+0.0%00.00
30 days0+0.0%00.00
6 months−4−7.7%00.00
1 year+5+11.6%00.00

Version history

1 versions recorded
1.019 Mar 2025

Details

Category
Developer Tools
First seen
19 Mar 2025
Size
95 KB
Languages
en
Pricing
Free
Support
github.com
Extension ID
mdinkpgbofjchcgmdbmkpifcecbheeic

Permissions and risk

Moderate riskimpact 2, likelihood 2
Permissions
storage

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