Regex Tools
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Regex Debug
Debug regular expressions by listing matches and seeing which characters fall inside them.
Features
- Match list
- Position map
- Flag toggles
How to use Regex Debug
- 1Enter pattern and input.
- 2Read the debug report.
Examples
Words
Input\b(\w+)\bOutput
match list + map
About Regex Debug
Regex Debugger visualizes match positions to help troubleshoot patterns beyond a simple tester.
Frequently asked questions
This maps match results, not a full NFA backtracking trace.
No.
Use Regex Tester for quick replace experiments.