Highlight.io
Open SourceAPIHighlight.io — professional IT platform
highlight.ioLast updated: April 2026
Highlight.io is an open-source full-stack monitoring platform with session replay, error tracking, and logging.
About
Highlight.io is an open source monitoring platform built for modern web applications, combining session replay, error monitoring, logging, tracing, and dashboards in a single product.
It helps developers and IT teams investigate frontend and backend issues by linking user sessions, application errors, logs, and performance data in one workflow.
No disconnected tools. No missing context. No guessing between frontend and backend.
Positioning
Highlight.io sits between session replay tools and full-stack observability platforms.
It is built for teams that want more than isolated error tracking, with the ability to connect what users experienced on the frontend to what happened in the backend.
Every investigation answers a simple question:
Can we see the issue, understand the context, and trace it across the full stack?
What You Get
- Session replay
Reproduce user sessions with console logs, network requests, and browser context - Error monitoring
Track frontend and backend errors with linked debugging context - Logs, traces, and dashboards
Analyze application behavior across logs, tracing data, and observability dashboards - Open source and self-hosted options
Deploy Highlight.io in your own environment or use the hosted platform
Core Areas
Session Replay
Replay user activity with console output, network activity, and browser-side debugging context
Error Monitoring
Capture exceptions and application issues across the frontend and backend
Logging & Tracing
Correlate logs and trace data to understand failures, latency, and execution flow
Full-Stack Observability
Connect user actions to backend logs, errors, and performance events in one view
Audience
- Developers
- DevOps Engineers
- SRE Teams
- IT Operations Teams
If you need to debug web applications across frontend and backend layers, Highlight.io is built for full-context troubleshooting.
Why It Matters
Highlight.io reduces the time needed to investigate production issues by bringing replay, errors, logs, and traces together in one platform.
It is widely positioned as a cohesive full-stack monitoring tool for modern web applications, especially for teams that want session replay tied directly to observability data.
The goal is simple:
see what happened, understand why it happened, and fix it faster
Positioning
Highlight.io is an open-source, full-stack monitoring platform that combines session replay, error monitoring, log management, and tracing in a single tool. While most observability platforms focus on either frontend or backend, Highlight connects the dots — clicking on a frontend error takes you to the exact backend trace and logs that explain what went wrong.
Built by engineers frustrated with juggling separate tools for session replay (FullStory), error tracking (Sentry), and log management (Datadog), Highlight provides a cohesive debugging experience. The platform is fully open-source and can be self-hosted, making it an attractive alternative for teams that want full-stack visibility without the per-seat pricing of commercial alternatives.
What You Get
- Session Replay
Pixel-perfect recordings of user sessions with console logs, network requests, and DOM mutations — see exactly what the user experienced. - Error Monitoring
Capture frontend and backend exceptions with full stack traces, source maps, and automatic grouping by root cause. - Log Management
Ingest, search, and alert on structured logs from any source with full-text search and automatic correlation to traces and sessions. - Distributed Tracing
Follow requests across microservices with OpenTelemetry-compatible tracing that links to the originating user session. - AI-Powered Insights
AI error explanations and suggested fixes that analyze stack traces, logs, and session context together.
Core Areas
Frontend Monitoring
Session replay and JavaScript error tracking that shows exactly how users experience your application.
Backend Observability
Distributed tracing and log management for server-side debugging with automatic correlation to frontend events.
Full-Stack Debugging
Click from a user's session replay directly to the backend traces and logs that explain the root cause of any issue.
Performance Monitoring
Track Web Vitals, API latency, and resource timing to identify performance regressions before users report them.
Why It Matters
When a user reports a bug, the debugging journey typically involves checking session replays in one tool, error logs in another, and backend traces in a third — context-switching that wastes hours. Highlight eliminates this by connecting every frontend interaction to its backend consequences in a single timeline.
Being open-source means teams can self-host to meet data residency requirements and avoid the aggressive per-seat pricing that makes tools like Datadog and FullStory prohibitively expensive for growing teams. The combination of session replay + errors + logs + traces in one open-source package is genuinely unique in the market.
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