Log Parser & Analyzer — Any Format, Any File Size
Drop any log file — even multi-GB — to parse, filter, and search instantly. Auto-detects 8 formats, level filtering, regex search, bookmarks, and CSV export. Nothing leaves your device.
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Frequently Asked Questions
8 formats: JSON/NDJSON, Nginx & Apache access logs (common and combined), Syslog, Docker JSON logs, CSV with headers, logfmt key=value pairs, and plain text with timestamps. Just drop the file — no config needed.
Yes. Parsing runs in a dedicated Web Worker so the UI stays fully responsive. A virtual scroll renders only visible rows, so even a 1GB+ log file scrolls smoothly without loading everything into memory.
After parsing, clickable level pills (ERROR, WARN, INFO, DEBUG) appear in the stats bar. Click any pill to toggle it. Combine with text or regex search for surgical filtering.
Yes. It detects continuation lines ('at', 'Caused by:', indentation) and groups them with the parent entry. Stack traces appear in a collapsible section per log row.
Click Export JSON or Export CSV. The export respects your current filters — so you can download just the errors or a specific time window, not the entire raw file.
Yes. Hover any row and click the pin icon. Pinned entries stay at the top of the list as you scroll and filter — so you never lose track of the key event you're investigating.
No. All parsing, filtering, and exporting runs locally in your browser via Web Workers. Your logs never leave your machine — even production credentials in logs are safe.