Regex Tester
Test regular expressions online with real-time matching, highlighting and capture groups. Free regex debugger with cheat sheet.
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Common Patterns
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Free Online Regex Tester
Test and debug regular expressions with real-time matching and syntax highlighting. See capture groups, match positions and use common preset patterns.
Features
- Real-time matching - Results update as you type
- Highlight - Visual highlighting of all matches in the test string
- Capture groups - View captured groups for each match
- Presets - Common patterns for email, URL, IP, dates and more
Regex Flags
- g - Global: find all matches
- i - Case insensitive
- m - Multiline: ^ and $ match line boundaries
- s - Dotall: . matches newlines