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Regex Library

FreeDeveloper & Technical

Test regular expressions live, or start from a library of 50 tested patterns for contact details, dates, IDs, web addresses and more. Each part of your pattern is explained as you type, and a runaway pattern times out instead of freezing the page.

Features

  • Live match highlighting with capture groups and a plain-English explanation
  • Replace and extract modes that work on your test text
  • 50 library patterns in 8 categories, each with examples that pass
  • Save your own patterns with should-match and should-not-match tests
  • Code snippets for JavaScript, Python and PHP, plus share links
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Regex Library with the Email address (find) pattern highlighting two addresses in sample text, the pattern library on the left and a part-by-part explanation and cheat sheet on the rightRegex Library with the Email address (find) pattern highlighting two addresses in sample text, the pattern library on the left and a part-by-part explanation and cheat sheet on the right

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