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Auto-detects log levels, timestamps, IPs, HTTP methods, status codes, and more
TraceLantern is a free, privacy-first online log viewer and analyzer for developers and DevOps engineers. It runs entirely in your browser — your logs are never uploaded or stored on any server.
Supports nginx access logs, syslog, systemd journal, Docker container logs, Kubernetes pod logs, JSON structured logs, application stack traces, and any text-based log format.
Features include syntax highlighting, log level filtering (ERROR, WARN, INFO, DEBUG, TRACE, FATAL), regex search, line bookmarking, and one-click export of filtered results.