Log File Viewer - Search, Filter & Highlight Logs

View and analyze log files with real-time filtering, syntax highlighting, and search. Perfect for debugging server logs, application logs, and system logs.

Drag & drop log file here, or

Load a log file to start viewing

Related Tools

ANSI Art Viewer - BBS Text Art Display

Text Diff Viewer - Compare Two Text File…

NFO Viewer Online - Scene Release Info R…

View all Text viewers →

Frequently Asked Questions

Common log formats including Apache/Nginx access logs, application logs, syslog, JSON logs, and plain text logs. Auto-detects common patterns.

Yes. Filter by ERROR, WARN, INFO, DEBUG levels. The viewer auto-detects log levels from common patterns like [ERROR], ERROR:, or severity numbers.

Automatic highlighting for log levels (errors in red, warnings in yellow, info in blue), timestamps, IP addresses, URLs, and JSON objects within logs.

Yes. Real-time search with regex support. Results are highlighted and you can jump between matches. Works with files up to 100MB on modern browsers.

No. All processing happens in your browser using JavaScript. Your log files never leave your device, ensuring privacy for sensitive logs.

The viewer shows static snapshots. For live tailing, use your terminal. This tool is best for analyzing existing log files offline.

Yes. Multi-line entries like Java stack traces are kept together. Use the 'Collapse stack traces' option to improve readability.

Yes. Export filtered log lines as a new text file. Useful for sharing specific errors or creating focused log extracts.

ISO 8601, RFC 3339, Unix timestamps, Apache/Nginx formats, and custom patterns like 'YYYY-MM-DD HH:MM:SS'. Timestamps are automatically highlighted.

Yes. Copy logs from 'docker logs' or 'kubectl logs' and paste into the viewer. JSON-formatted logs from containerized apps are automatically parsed.

Paste Log Content

Related Tools