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OpenTelemetry Log Explorer

Normalize OpenTelemetry and common structured logs, filter errors and services, inspect fields, cluster messages, correlate traces, and export sanitized results.

Logs stay in this browser
Log bodies, attributes, trace IDs, service names and filenames never enter anonymous analytics. Sensitive attributes are masked in exports by default.

Log input

Up to 10 MiB and 50,000 records. No collector or logging backend is contacted.

Load a sample or paste logs

A log timeline, filters, field cardinality, message clusters and trace correlations will appear here.

Cardinality is estimated only from this input. Deterministic message templating does not replace the query and retention behavior of a logging backend.

About OpenTelemetry Log Explorer

Analyze OTLP, JSONL and structured logs locally with trace correlation. Normalize OpenTelemetry and common structured logs, filter errors and services, inspect fields, cluster messages, correlate traces, and export sanitized results. The core workflow is designed to run in your current browser.

Key capabilities

  • Read OTLP Logs JSON, File Exporter JSONL and common structured logs
  • Group cross-service logs with TraceId and SpanId
  • Estimate field cardinality and normalize dynamic values into message clusters
  • Mask sensitive attributes by default and provide a body-free report

Useful for

  • Aggregate error logs and recurring patterns during incident triage
  • Locate the related trace and span from a log record
  • Share sanitized logs or a compact summary with collaborators

Frequently asked questions

Is OpenTelemetry Log Explorer free to use online?

Yes. OpenTelemetry Log Explorer opens in a modern browser and does not require desktop software installation.

What is OpenTelemetry Log Explorer useful for?

Common use cases include Aggregate error logs and recurring patterns during incident triage; Locate the related trace and span from a log record.

Is my input or file uploaded?

The core processing workflow is designed to run locally in the browser. Key capabilities include Read OTLP Logs JSON, File Exporter JSONL and common structured logs, Group cross-service logs with TraceId and SpanId, Estimate field cardinality and normalize dynamic values into message clusters; account, comments, and anonymous analytics may still create normal site requests.

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