Regex Tester & Explainer

Write, test, and understand regular expressions in real time. Paste your test string and see every match highlighted instantly. The built-in Explainer breaks down each part of your pattern into plain English — so you can understand what the regex actually does. Includes a library of 10+ common patterns. Everything runs in your browser.

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Cómo usar Regex Tester & Explainer

Completa tu tarea perfectamente en solo tres sencillos pasos.

1

Enter Your Pattern

Type a regex in the pattern box or pick one from the pattern library.

2

Set Flags

Toggle global (g), case-insensitive (i), multiline (m), or dotAll (s) flags.

3

Read the Explainer

The Explainer panel breaks each part of your regex into plain English, color-coded by type.

Preguntas frecuentes

Todo lo que necesitas saber sobre el Regex Tester & Explainer.

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