LogPane – JSON & NDJSON Log Viewer

A fast, private JSON and NDJSON log viewer. Search, filter and inspect structured logs directly in your browser.

Structured logs, without the noise. LogPane turns raw JSON and NDJSON logs into a clean, searchable, and easy-to-read interface — directly in your browser. Built for developers, DevOps engineers, and anyone working with structured application logs. FEATURES • Readable JSON and NDJSON log viewer • Filter logs by severity: ERROR, WARN, INFO, and DEBUG • Instantly search messages and structured fields • Expand and inspect individual log entries • Find related events using trace IDs and correlation IDs • Readable Java stack traces from structured exception fields • Pretty-printed JSON payloads inside log messages • Merge several logs by time and follow one request across services • Reload and live tail for Kubernetes and OpenShift pod logs • Copy or export exactly the entries you filtered • Dark and light themes • Open local log files or inspect supported browser pages • Fast navigation through large log files PRIVACY FIRST Your logs stay on your device. LogPane processes data locally in your browser, with no account, external processing servers, or tracking. No complicated setup. No subscriptions. Just readable logs. Open source. Free to use. Make sense of your logs with LogPane. All product names mentioned are trademarks of their respective owners. LogPane is an independent open-source project.