Nobuf

Log & Incident Explorer

Local only

Search, correlate, cluster, chart, and safely redact structured or plain-text logs.

Paste logs or choose a local file
Paste JSONL, syslog, nginx, or plain-text logs…
All parsing and analysis stays in this browser. GZIP files are decompressed locally.

How to use it

  1. 01

    Load your logs

    Paste text or import LOG, TXT, JSONL, NDJSON, or GZIP files up to 50 MB. Format detection identifies common structured layouts.

  2. 02

    Investigate the incident

    Filter by level and service, use field-aware queries, inspect error findings, correlate request or trace IDs, and review event timelines.

  3. 03

    Cluster or export safely

    Group variable messages into patterns, export the filtered event set, or redact common secrets and identifiers before sharing.

Frequently asked questions

Are log files uploaded?

No. Parsing, searching, clustering, correlation, redaction, and export run in your browser.

Which log formats are supported?

The analyzer recognizes JSON lines, RFC 5424-style syslog, common nginx access logs, and generic timestamped or plain-text lines.

Can redaction guarantee that every secret is removed?

No. It covers common tokens, JWTs, emails, IP addresses, and secret-like fields, but you should review the preview before sharing sensitive material.

Is pattern clustering an AI service?

No. It is deterministic local normalization that replaces common variable tokens such as IDs, IPs, and numbers so similar messages group together.

Keep working with other focused browser utilities.

All tools

Local by default; remote data sources are clearly disclosed.

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Nobuf

Fast, local-first utilities powered by your browser.