🔎 Regex Tester

Test regular expressions with live highlighting.

Regex Pattern

Flags

Test String

How to Use the Regex Tester

Regular expressions (regex) are powerful patterns for matching text. This tester provides real-time highlighting of matches, making it easy to build and debug complex patterns.

Regex Basics

. - Any character
\d - Digit (0-9)
\w - Word character
\s - Whitespace
* - Zero or more
+ - One or more
? - Zero or one
[] - Character class
() - Capture group

Using the Tester

Enter your regex pattern in the Pattern field
Add flags: g (global), i (case-insensitive), m (multiline)
Paste test text in the Test String field
Matches are highlighted in real-time

Common Patterns

Email: \b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b
Phone: \d{3}-\d{3}-\d{4}
URL: https?://[^\s]+