About Log Timeline Visualizer

Debugging a production incident usually starts the same way: a wall of raw log lines, no obvious order, and a handful of request IDs you have to trace by eye. Log Timeline Visualizer exists to remove that manual step.

Paste in raw logs - plain text or structured JSON, from Java, Node, Python, or anything else that logs to stdout - and it reconstructs what actually happened: which events belong to the same request, how long each step took, and where the slow or broken parts are.

It is deliberately simple. There is no account, no backend, and no database. Every line you paste is parsed and rendered by JavaScript running in your own browser tab; nothing is uploaded anywhere. That's not a compliance checkbox - it's the entire architecture.

It's built and maintained by Gouse Labs as a free utility for developers and SREs. If you run into a log format it doesn't handle well, that's useful to know - see the Contact page.