quellog

A high-performance PostgreSQL log analyzer. Processes gigabytes of logs in seconds, producing synthetic overviews, SQL performance analysis, and operational insights.

Try it in your browser

Open the interactive demo → — Drop a PostgreSQL log file and explore the report. All processing happens locally; your data never leaves your machine.

Key Features

• Fast — high throughput, streaming architecture, bounded memory
• Multi-format — stderr, CSV, JSON, syslog + cloud providers (RDS, Cloud SQL, Azure, CNPG)
• Archives — gzip, zstd, tar, zip, 7z — decompressed on the fly
• Filtering — by time range, database, user, application, host
• Interactive HTML — standalone reports with charts, filtering, query drill-down
• Export — JSON, YAML, Markdown for automation and integration

Getting Started

1. Install quellog
2. Configure PostgreSQL logging
3. Run quellog /var/log/postgresql/*.log