Logstash Filter Debugger

A lightweight web-based tool for rapidly testing and debugging Logstash filter configurations. Designed for data engineers and DevOps specialists working with the ELK stack, it kill the need for repetitive log cycling through your pipeline just to validate a single grok pattern or mutate rule.

Live Test Environment for Your Logstash Filters.

✨ Key Features

Instant Feedback: Paste your log sample and filter configuration, get the parsed result in seconds - not require deployment or log shipping.

Full Logstash Power: Supports the complete spectrum of Logstash filter plugins (Grok, Mutate, Date, Ruby, JSON, etc.) within the web interface.

Real Logstash Engine: Executes your filters using an actual Logstash instance.

Clean Web UI: No CLI, no YAML file juggling. A simple, intuitive three-panel layout for Sample, Filter, and Output.

Zero Setup for Testing: Ideal for experimenting with complex grok patterns or multi-stage transformations on the fly.

🎯 Who Is This For?

Data Engineers building and maintaining ELK/Elastic Stack pipelines.

DevOps/SRE Engineers troubleshooting log parsing issues.

Any Developer who needs to quickly prototype a Logstash configuration before committing it to code.