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Formatadores e Código

Testador de Regex

Testador de regex gratuito com destaque ao vivo. Escreva regex JavaScript, veja correspondências e grupos de captura atualizarem enquanto digita. O mesmo motor que o seu navegador usa.

Runs in your browser
Pattern
//gi
Flags
Common patterns
Test string2 matches
Highlighted
Email ada@example.com or grace.hopper@navy.mil for info.
Matcheswith capture groups
  • #1 · index 6ada@example.com
    • $1ada
    • $2example.com
  • #2 · index 25grace.hopper@navy.mil
    • $1grace.hopper
    • $2navy.mil
Replace

Toggle on to write a replacement string and see the result. Use $1, $2, … to reference capture groups.

Cheatsheet
  • \dany digit (0-9)
  • \wword character (letters, digits, _)
  • \sany whitespace
  • .any single character
  • *zero or more of the preceding
  • +one or more
  • ?optional (0 or 1)
  • {n,m}between n and m of the preceding
  • ^start of string (or line with m)
  • $end of string (or line with m)
  • [abc]any of a, b, or c
  • [^a-z]anything BUT lowercase a-z
  • (…)capture group
  • (?:…)non-capturing group
  • |alternation (or)

Nota do editor

Understanding · Patterns, not literals.

Este capítulo aprofundado está disponível apenas em inglês no momento. A ferramenta de conversão acima funciona no seu idioma; o artigo explicativo longo ainda não foi traduzido.

Perguntas frequentes

Quick answers.

›Which regex flavor is used?

JavaScript regex (ECMAScript), evaluated by the same engine your browser uses. Matches PCRE for most common patterns but differs on lookbehinds and named groups.

›What flags can I use?

g (global), i (case-insensitive), m (multiline), s (dotAll), u (unicode), y (sticky).

›Are matches highlighted live?

Yes — every keystroke re-runs the regex and updates highlights immediately.

›Are capture groups shown?

Yes. Numbered and named capture groups are listed for each match.

›Is my input sent anywhere?

No — everything runs in your browser. Useful when testing regex against sensitive text.

›Is the regex tester free?

Yes — fully free, no signup.

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