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Log Analyzer

Count log levels, list error lines and sort recognized elapsed-time entries.

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Count log levels, list error lines and sort recognized elapsed-time entries online

Summarize pasted log levels and recognized durations. Only recognized formats contribute to elapsed-time sorting; unmatched lines need manual review.

How to use it

Enter the source input or select Try example. Review the displayed input. Select Run tool and inspect the result before copying or downloading.

Worked examples

Summarize pasted log levels and recognized durations.

Worked example — Log Analyzer

Settings: No additional options

Input:

2026-10-12T08:00:00Z INFO [TIME] - Elapsed Time: 44 ms
2026-10-12T08:01:00Z ERROR Request failed
2026-10-12T08:02:00Z INFO Elapsed Time: 1.2 s

Output:

{
  "lines": 3,
  "levels": {
    "INFO": 2,
    "ERROR": 1
  },
  "errors": [
    {
      "line": 2,
      "text": "2026-10-12T08:01:00Z ERROR Request failed"
    }
  ],
  "elapsed": [
    {
      "line": 3,
      "milliseconds": 1200,
      "text": "2026-10-12T08:02:00Z INFO Elapsed Time: 1.2 s"
    },
    {
      "line": 1,
      "milliseconds": 44,
      "text": "2026-10-12T08:00:00Z INFO [TIME] - Elapsed Time: 44 ms"
    }
  ]
}

For this input, “lines” is 3. These are the named fields in the example output.

Limitations and common mistakes

Only recognized formats contribute to elapsed-time sorting; unmatched lines need manual review.

Frequently asked questions

How can I tally log levels, list error lines and sort recognized elapsed-time entries online?

Enter the source input or select Try example. Review the displayed input. Select Run tool and inspect the result before copying or downloading.

Where is my input processed?

The bundled tool processes input in your browser. It does not upload tool input to a conversion service. Other site plugins, analytics, advertising and browser extensions may have separate behavior.