Test and debug regular expressions with real-time matching.
Regex Tester in 3 simple steps
Enter a regular expression pattern.
Type or paste text to test against.
Matches are highlighted in real-time with capture group details.
Matches highlighted directly in your test text.
See all groups and their contents.
Toggle global, case-insensitive, multiline, and other flags.
Built-in regex cheat sheet for common patterns.
Regular expressions are powerful but tricky. Our regex tester lets you write, test, and debug patterns in real-time. See matches highlighted in your test text, inspect capture groups, and toggle flags — all instantly.
Includes a quick reference guide for common regex patterns and syntax, making it perfect for both beginners learning regex and experienced developers debugging complex patterns.