Tools

Log Pattern Extractor to Build Regex

Generate regex-like patterns from log lines to help with parsing.

Log Pattern Extractor

Create patterns from log lines to speed up regex building and parsing rules. This helps observability and platform teams standardize log processing.

How to use the Log Pattern Extractor

  1. Paste one or more log lines.
  2. Click Extract.
  3. Review the suggested pattern.

Common use cases

  • Building parsers for log pipelines.
  • Normalizing log formats across services.
  • Creating alert rules for specific messages.
  • Documenting log patterns for teams.

Tips & notes

  • Provide multiple sample lines for better generalization.
  • Review the output before using it in production.
  • Escape literal characters you need to match exactly.

Related developer tools

  • Log Timestamp Normalizer
  • Regex Tester
  • Regex Performance Tester

FAQ

Does it generalize numbers?
Yes, digit sequences become \d+.
Is the output ready to use?
It is a starting point and may need refinement.
Can it detect timestamps?
Yes, common timestamp formats are generalized.