Regex Tester
Test and debug regular expressions (regex) with real-time matching. See matches highlighted, test patterns, and learn regex with helpful examples. Supports JavaScript, Python, PHP, and more.
g: global, i: case-insensitive, m: multiline, s: dotAll, u: unicode, y: sticky
Results: 0 matches
Common Regex Patterns
Character Classes:
- \d - Any digit (0-9)
- \w - Any word character (a-z, A-Z, 0-9, _)
- \s - Any whitespace character
- . - Any character (except newline)
Quantifiers:
- * - 0 or more times
- + - 1 or more times
- ? - 0 or 1 time
- {n} - Exactly n times
Examples:
- ^\d{3}-\d{3}-\d{4}$ - Phone number
- ^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$ - Email
Anchors:
- ^ - Start of string
- $ - End of string
- \b - Word boundary
How to Use Regex Tester
Enter Regex
Type your regex pattern
Add Text
Paste text to test against
See Matches
Matches highlighted in real-time
Test Flags
Try g, i, m flags
Features
Privacy First
All processing happens in your browser
Instant Download
Download processed images immediately
Mobile Friendly
Works on all devices
Frequently Asked Questions
Q:What regex flavor is used?
Q:Can I save regex patterns?
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Why Choose Our Regex Tester?
Our tool is completely free, requires no registration, and processes everything in your browser for maximum privacy and speed. No file size limits, no watermarks, just pure functionality.
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