Regex Tester
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Match Highlighting
0 matches
Match Details
Quick Reference
. Any character\d Digit [0-9]\w Word char [a-zA-Z0-9_]\s Whitespace^ Start of line$ End of line* 0 or more+ 1 or more? 0 or 1{n,m} n to m times[abc] Character class(abc) Capture group(?:abc) Non-capturea|b Alternation(?=abc) Lookahead(?<=abc) LookbehindAbout This Regex Tester
Test and debug regular expressions in real-time with instant match highlighting and capture group extraction. Uses JavaScript's native RegExp engine — results match exactly what you'll get in your code.
Features
- Real-Time Testing — Matches update as you type
- Match Highlighting — Visual highlighting with alternating colors
- Capture Groups — See all captured groups for every match
- All Flags — Global, multiline, case-insensitive, dot-all, unicode
- Quick Reference — Common regex patterns at a glance
- Privacy — 100% client-side, no data leaves your browser
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