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Regex Tester

Test JavaScript regex patterns against sample text with live highlighting.

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How to use Regex Tester

  1. 1

    Enter pattern

  2. 2

    Enter text

  3. 3

    See matches

Why use Regex Tester?

  • Live highlighting

Common use cases

  • Debug log parsers

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About Regex Tester

Regex Tester validates JavaScript regular expressions against sample input with live match highlighting.

Frequently asked questions

JavaScript regex.
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