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Log File Viewer

Open large .log files instantly, filter by level, search with highlights or regex, and read JSON-lines logs as tidy rows. Streamed and private in your browser.

Sin subidas

Cómo usar Log File Viewer

  1. 1Abre Log File Viewer. Funciona en tu navegador, sin registro.
  2. 2Arrastra tu archivo aquí o elígelo. Se queda en tu dispositivo; no se sube nada.
  3. 3Ajusta las opciones hasta que la vista previa se vea bien.
  4. 4Descarga el resultado.

Preguntas

How large a log can it open?

The file is streamed and only the visible lines are drawn, so logs with millions of lines open fine. The practical limit is your device’s memory — roughly a couple of gigabytes.

Does it understand JSON logs?

Yes. JSON-lines logs (pino, bunyan, Winston, structlog, ECS…) are detected automatically: the level, time and message are pulled out, and you can click a line to see the full object.

Is my log uploaded?

No. The file is read in your browser and never leaves your device.

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