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Real-time RegEx Tester & Debugger

Test and debug regular expressions with real-time matching, group highlighting, and a built-in cheat sheet.

//
0 Matches
Test String
1 line69 chars

Match Result (Real-time)

Highlights in gold
Quick Cheat Sheet
. (Dot)
Any single character
\d
Any digit (0-9)
\w
Any word char (a-z, 0-9, _)
\s
Any whitespace char
^ / $
Start / End of string
*
Zero or more
+
One or more
?
Zero or one
{n,m}
Range of occurrences
[abc]
Any char in brackets
(...)
Capture group
Professional RegEx Tester & Debugger
Our real-time Regular Expression tool provides instant visual feedback for your patterns. Featuring group highlighting, error detection, and common flags support, it is designed to help you build and verify complex expressions for your applications in seconds.
Frequently Asked Questions
What are Regex Flags?
Flags modify how the pattern is matched. "g" (global) finds all matches, "i" (insensitive) ignores case, and "m" (multiline) treats anchors like ^ and $ per line.
Is it safe?
Yes. All pattern matching is executed within your browser's V8/JavaScript engine. No data is sent to our servers.
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