🔍 Regex-Tester

Test and debug regular expressions with real-time matching

🔒 Dein Bild verlässt nie dein Gerät. Die gesamte Verarbeitung erfolgt lokal in deinem Browser mit JavaScript RegExp engine. Kein Upload, kein Server, kein Tracking.

Funktionen

  • Real-Time Matching — See matches highlighted instantly as you type your pattern and test string.
  • Capture Groups — View captured groups for each match — essential for complex patterns.
  • Find & Replace — Test regex replacements with a replace string and see the result.
  • Common Patterns — Quick-load common patterns for email, URL, phone, IP, and date validation.

So funktioniert's

  1. Enter a regex pattern — Type your regular expression and set flags (g, i, m, s).
  2. Enter test text — Paste the text you want to match against.
  3. Review matches — See highlighted matches, capture groups, and optionally test replacements.

Anwendungsfälle

  • Debug and test regex patterns before using them in code
  • Validate email, URL, or phone number patterns
  • Search and replace text with complex pattern matching

Häufig gestellte Fragen

What regex flavor is used?

JavaScript's built-in RegExp engine, which supports standard features including lookahead, lookbehind, named groups, and Unicode escapes.

Are the common patterns reliable?

They cover the most common use cases. For production validation, always test with edge cases specific to your requirements.

Verwandte Werkzeuge