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Regex tester

Write a regular expression and see every match and capture group highlighted in your test text as you type, with flags and a quick reference.

Private by design: everything is processed on your device. Nothing you add is uploaded or stored.

How to use it

  1. Type a pattern and choose flags.
  2. Paste a test text.
  3. See the matches and groups.

Questions

Which syntax is used?

JavaScript regular expressions, including named groups and lookbehind.

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