Track JavaScript errors in real-time with badge counter, detailed logs, and custom filtering for web developers.
Users
45
+2 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
1
0 in 30 days
Store rank
#113K
#94K among extensions
Version
1.0.0
updated 8 Nov 2025
Users
monthly, 13 months
Latest, 16 Oct 2026:45 usersMove the mouse over the chart for any month
Ratings count
monthly, 13 months
Latest, 16 Oct 2026:1 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 JS Error Monitor
**Professional JavaScript Error Monitoring for Developers**
JS Error Monitor is the essential debugging tool for web developers, QA engineers, and anyone who needs to track JavaScript errors across websites. Never miss a bug again with real-time error detection and professional-grade monitoring features.
**🎯 Key Features:**
• Real-time JavaScript error tracking with instant badge updates
• Detailed error logs with timestamps for precise debugging
• Custom keyword filtering to ignore third-party and extension errors
• Per-tab error counting for efficient multi-tab debugging sessions
• Color-coded badge system (green/orange/red) for quick status assessment
• Clean, modern interface designed for developer productivity
**🔍 Monitors These Error Types:**
• JavaScript runtime exceptions and errors
• Console.error() calls and critical warnings
• Unhandled promise rejections
• Type errors and reference errors
• Resource loading failures (images, scripts, stylesheets)
• Network request failures
**⚡ Developer-Friendly Features:**
• Zero performance impact on websites
• No data collection or external requests
• Instant error detection without page refreshes
• Professional UI with intuitive navigation
• Automatic error filtering and categorization
• Settings automatically saved as you type
**🎨 Perfect For:**
• Frontend developers debugging production websites
• QA engineers tracking error patterns across applications
• DevOps teams monitoring application health
• Students learning web development
• Anyone who wants cleaner, more efficient debugging
**🔒 Privacy First:**
All error tracking happens locally in your browser. No data is sent to external servers. Your privacy is completely protected.
**🚀 Easy Setup:**
Install and start monitoring immediately. No configuration required, but powerful customization options available for advanced users.
Transform your debugging workflow with professional JavaScript error monitoring. Install JS Error Monitor today!
Growth
Window
Users
Change
Ratings
Rating
7 days
−1
−2.2%
0
0.00
30 days
+2
+4.7%
0
0.00
6 months
+22
+95.7%
0
0.00
1 year
+37
+462.5%
0
0.00
Chrome Web Store search rankings
Where JS Error Monitor appears when people search the store, with the 30 day change