Log Tools

Filter, tail and slice log files instantly.

100% Client-Side · In-Memory Only

Interactive Tool Workspace

Loading Log Tools...

How to Use Log Tools

  1. Paste log lines or load a sample log into the input box.
  2. Filter lines by keyword (e.g. "ERROR", "user_id=42") or select log severity levels (INFO, WARN, ERROR).
  3. Adjust the tail limit to view only the latest N matching entries.
  4. Click "Export filtered" to download your filtered log as a clean text file.

Features & Guarantees

  • Client-side log slicing that never transmits application server logs to external servers.
  • Real-time frequency count for DEBUG, INFO, WARN, and ERROR lines.
  • Fast tailing support for thousands of lines without lag.

Frequently Asked Questions

Are server logs safe to paste into this tool?

Yes. Unlike cloud log analyzers, debug.tools runs completely offline in your browser. No telemetry or log lines leave your browser session.