Log Timeline Visualizer
Paste raw logs → get a chronological, grouped timeline of what happened.
No login No server Runs 100% in your browser
No timeline yet. Paste logs above and click Visualize timeline, or try a sample.
How it works
1. Paste your logs
Plain text or structured JSON - the parser auto-detects timestamps, log levels, and request/trace IDs across common formats.
2. Flows are reconstructed
Related log lines are grouped into a single request/trace flow, even when no explicit correlation ID exists (falls back to worker-thread session detection).
3. Spot errors and slow gaps
Every flow is rendered as a timeline with time deltas between events. Gaps past your threshold, and every error, are flagged and jump-to-able.
Your logs never leave your device
Parsing and rendering both happen locally in JavaScript. Nothing you paste is uploaded, stored, or sent to any server.