Regex Tester
Build, test and debug regular expressions with live match highlighting.
All processing happens locally in your browser
Result
Email ada@example.com or linus@kernel.org for details.
2 matches
- [0] ada@example.com @6groups: $1="ada"$2="example.com"
- [1] linus@kernel.org @25groups: $1="linus"$2="kernel.org"
Regular expressions are patterns that describe sets of strings, used everywhere from form validation and log parsing to find-and-replace in editors. Compose a pattern below, toggle flags like g (global), i (case-insensitive), m (multiline), and s (dotAll), and matches are highlighted in real time. Capture groups — any part of your pattern wrapped in parentheses — are listed separately under each match so you can extract exactly the data you need.