Quick answer
The Log File Analyzer counts lines and detects log levels (ERROR, WARN, INFO, DEBUG, TRACE).
Log File Empty
The Log File Analyzer counts lines and detects log levels (ERROR, WARN, INFO, DEBUG, TRACE). If you paste empty content or only blank lines, the summary will show zero lines and no level breakdown.
Common causes
- Pasting an empty string or whitespace-only content.
- Log file not yet written or truncated.
- Wrong copy: clipboard contained no log data.
How to fix
- Paste actual log output (e.g. from a file or stdout).
- Ensure the log source is writing to the file or stream you are copying from.
- Use Log File Analyzer to verify: total lines and level counts should be non-zero for real logs.
Examples
Bad
Good
[INFO] Server started [ERROR] Connection failed
FAQ
- Does the analyzer require a specific log format?
- No. It detects levels by keywords (ERROR, WARN, INFO, DEBUG, TRACE) anywhere in each line. Any log format that includes these words will be categorized.
- What if my logs have no level keywords?
- Lines without those keywords are counted as "Other". You still get total line count and empty line count.
Fix it now
Try in validator (prefill this example)