Log Analyzer
Paste noisy logs, spotlight the signal, filter by level, and export clean diagnostics.
Raw input
Paste or upload a Spring Boot log file, then process it.
0 characters0 lines
No logs analyzed yet
Paste logs or upload a .log/.txt file, then press Process logs to see entries, levels and highlights.
Analysis summary
- Total logs
- 0
Filters
Log levels
Log Analyzer FAQ
- Which log formats are supported?
- Spring Boot's default console format: ISO timestamp, level, PID, the --- separator, [application] [thread], logger and message. Lines that don't start a new entry, such as Java stack traces, are attached to the entry above them.
- Are my logs uploaded to a server?
- No. Parsing, filtering and exporting all happen in your browser. Pasted or uploaded logs never leave your device and are not stored.
- Why does it say no log entries were recognized?
- None of the lines matched the expected format, usually because the timestamp has no milliseconds or offset, or the --- separator is missing. Lines before the first recognized entry are skipped and counted.
- How large can a log file be?
- Uploads are limited to 20 MB of plain text. Binary files (gzip, zip, images) are rejected. Large results are shown 500 entries at a time, but exports always include every matching entry.
- What do the JSON and CSV exports contain?
- Only the entries that match your current level and search filters, with timestamp, level, origin, message and detected highlights. CSV cells that start with =, +, - or @ are prefixed with a quote so spreadsheets don't run them as formulas.