Regex Tester
Live evaluate regular expressions with capture groups and highlighting.
Match 1:support@example.com
Match 2:sales@company.co.uk
Regex Cheatsheet
Character Classes
. Any character except newline\w Word character (a-z, A-Z, 0-9, _)\d Digit (0-9)\s Whitespace (space, tab, newline)
Anchors
^ Start of string / line$ End of string / line\b Word boundary
Quantifiers
* 0 or more+ 1 or more? 0 or 1 (optional){n} Exactly n times
Groups
(...) Capture group[abc] Any of a, b, or c[^abc] Not a, b, or ca|b Match a or b
Flags
g Global (don't stop at first match)i Case insensitivem Multiline (^ and $ match per line)
About Regex Tester
Live regular expression evaluator supporting capture groups, flags, match breakdown, and quick syntax cheatsheets.
Key Features
- 100% Client-Side execution for complete data privacy and security.
- Instant processing with zero server round-trip latency.
- Responsive layout optimized for both desktop and mobile viewports.