JavaScript Error and Performance Monitoring
Get complete visibility into your JavaScript errors and performance issues that are impacting your end user experience. Fix critical issues sooner with in depth data points that helps you in analyzing and resolving issues with great speed.
Achieve comprehensive visibility into JavaScript execution and browser rendering pipelines
JavaScript execution waterfalls
Track script parsing, compilation, and execution timing across main thread bottlenecks in real user JavaScript application sessions.
Dynamic import & module loading
Monitor ES6 module imports, dynamic import() waterfalls, and code splitting performance in modern JavaScript single page applications.
Event loop blocking analysis
Measure long tasks, task queue delays, and microtask execution timing affecting JavaScript application responsiveness.
JavaScript runtime error capture
Capture unhandled promise rejections, async generator failures, and syntax errors with complete call stack traces.
Synthetic event performance
Profile addEventListener delays, event delegation overhead, and passive event listener effectiveness in web applications.
Main thread to user correlation
Connect JavaScript long tasks directly to input delays, layout thrashing, and Core Web Vitals impact.
Memory leak detection
Track closure leaks, detached DOM nodes, and growing WeakMap instances across JavaScript application lifecycles.
JavaScript bundle optimization
Validate tree shaking effectiveness, dead code elimination, and bundle duplication patterns in production deployments.
Track Request Performance in JavaScript Applications
Measure page loads, route changes, and API request duration in real user sessions using request-centric visibility.
Pages Loading Slowly Without Clear Insight
JavaScript pages can feel slow, and without page-level timing it is difficult to identify which views consistently take longer to load.
Route Changes Introducing Unexpected Delay
Single-page navigation can still add latency, and route timing highlights which transitions increase overall load time.
API Requests Blocking Page Readiness
Slow backend calls directly affect frontend performance, and API request timing shows which calls delay page completion.
Repeated Slow Requests Across Users
Some requests remain slow across multiple sessions, and request-level views help detect recurring performance issues.
Averages Hiding Real Performance Problems
Overall averages may appear healthy, but individual slow sessions are missed unless per-request visibility exposes actual delays.
Why Choose Atatus for JavaScript RUM?
Master JavaScript main thread performance, event loop optimization, and modern module loading without framework dependencies.
Built for all JavaScript applications
Native monitoring of V8/SpiderMonkey/JSC engines, event loop scheduling, and DOM scripting performance across any JavaScript web app.
Universal JavaScript diagnostics
Execution waterfalls, long task traces, and memory timeline analysis across all JavaScript environments.
Zero-config script integration
Single script tag deployment monitors any JavaScript application—framework agnostic, build tool independent.
Pure JavaScript Core Web Vitals
LCP/CLS/INP metrics attributed to script execution, event handlers, and main thread blocking patterns.
Universal web app scaling
Enterprise-grade monitoring for custom JavaScript SPAs, micro-frontends, and legacy web applications.
JavaScript growth pricing
Scalable costs track JavaScript execution across user sessions—no framework licensing or migration costs.
Unified Observability for Every Engineering Team
Atatus adapts to how engineering teams work across development, operations, and reliability.
Developers
Trace requests, debug errors, and identify performance issues at the code level with clear context.
DevOps
Track deployments, monitor infrastructure impact, and understand how releases affect application stability.
Release Engineer
Measure service health, latency, and error rates to maintain reliability and reduce production risk.
Frequently Asked Questions
Find answers to common questions about our platform