DeveloperLast updated: Nov 01, 2023

Regex Tester & Debugger

Write, test, and debug regular expressions with real-time highlighting. Our tool helps you understand complex patterns and visualize matches against your test strings.

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regular_expressionRegular Expression

Test String

check_circleMatch Information (0)

No matches found. Try adjusting the pattern.

Mastering Regular Expressions

Regular expressions (Regex) are powerful tools for pattern matching and text manipulation. While they can be intimidating at first, our **Regex Tester** provides a visual playground to experiment safely.

Common Patterns

^ - Start of string
$ - End of string
\d - Any digit (0-9)
\w - Any word character (a-z, A-Z, 0-9, _)
+ - One or more quantifiers

Frequently Asked Questions

We use the native JavaScript RegExp engine. This supports most standard features including lookaheads, styling, and standard character classes. It runs directly in your browser.

Use parentheses ( ) to define capturing groups. Our tool will list all captured groups in the output panel below the match visualization.

Yes. Your regex patterns and test strings are processed entirely on your device. Nothing is sent to our servers.

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