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Track JavaScript errors in real-time with badge counter, detailed logs, and custom filtering for web developers. **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!
Nov 8, 2025
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.