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Regex Tester

Try a regular expression on your own text. See every match highlighted, with its position and capture groups.

Runs in your browser. Nothing is uploaded.

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How to use it

  1. Type or paste your text
  2. Adjust the options if you want to
  3. Copy or download the result

Worth knowing

  • This uses JavaScript regular expression syntax, so it matches what browsers and Node.js do.
  • Turn on the i flag to ignore case, and m to make ^ and $ work on every line.

Questions

Is my text uploaded anywhere?

No. Everything happens in your browser, on your device. What you type is never sent to our servers.

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