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Regex Tester
Test and debug regular expressions with live matching
//g
Flags
Actions:
How to Use
1Enter your regular expression pattern
2Choose flags (g, i, m, etc.)
3Enter test text to match against
4View matches and capture groups highlighted
Features
Live pattern matching
Capture group highlighting
Match explanation
Common regex patterns library
Multiple flag support
Benefits
Debug regular expressions visually
Learn regex with instant feedback
Build complex patterns step by step
Frequently Asked Questions
What regex syntax is supported?
The tool supports JavaScript regex syntax including character classes, quantifiers, lookaheads, lookbehinds, and capture groups.
Can I use regex flags?
Yes. You can toggle global (g), case-insensitive (i), multiline (m), and other flags.
Does it explain the regex pattern?
Yes. The tool provides a human-readable explanation of what each part of the regex pattern matches.