Test JavaScript Regex Online
Enter a pattern and flags, then see matches highlighted in real time with capture groups and indices. Built on the JavaScript RegExp engine for accurate results.
Developer
.*
Regex Tester
Test and debug regular expressions with live matching and highlights
//g
Quick Start
- 1Type your regex pattern in the pattern field
- 2Toggle flags like g, i, m, and s
- 3Paste your test string below
- 4Review highlighted matches and capture groups
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Looking for FAQs and advanced options? Visit the full Regex Tester page →