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Regex Tester

Test, debug, and learn regular expressions locally with real-time matching and extraction.

Best for:Pattern debuggingMatch extractionTesting form validations
Privacy-first processingYour text and regex patterns are evaluated locally in the browser.
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Guide

Usage, privacy, and related tools

Best for

  • Pattern debugging
  • Match extraction
  • Testing form validations

Privacy

Your text and regex patterns are evaluated locally in the browser.

Quick tips

  • Use the global flag to find all matches instead of just the first one.
  • Watch the groups list to see exactly what each capture group contains.

How to use this tool

  1. Enter a regular expression pattern.
  2. Toggle flags like global (g) or case-insensitive (i).
  3. Type test strings to see matches instantly.

Common questions

What flavor of Regex does this use?

It uses standard JavaScript (ECMAScript) regular expressions natively in your browser.

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