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Regex Tester

Test JavaScript regular expressions against sample text.

  • Private when possible
  • No account required

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About this tool

Test regular expressions against sample text with live match highlighting to validate patterns before shipping.

How to use

  1. Enter pattern and flags.
  2. Paste test text.
  3. Inspect matches.

Features

  • Flags support
  • Match indexes
  • Capture groups
  • Local

Common use cases

  • Development
  • Debugging
  • Data cleanup

Supported formats

Privacy

This tool processes data in your browser. Content is not uploaded to our servers unless a feature explicitly requires a network request.

Frequently asked questions

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