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Dev Utility

Regex Tester

Test JavaScript regular expressions live against any text with highlighted matches and a match counter.

Tool

LIVE
Matches: 0

How to use

  1. Enter or paste your input in the box on the left.
  2. The result appears instantly on the right - click the button if there is one, otherwise it updates automatically as you type.
  3. Copy the result or keep editing. Everything runs locally in your browser - nothing is uploaded.

What is this tool?

Test JavaScript regular expressions live against any text with highlighted matches and a match counter.