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Regex Tester

Test and debug regular expressions in real-time. Validate patterns, match text, and understand how your regex works instantly.

Regular Expression
Test regular expressions with live feedback, match highlighting, and detailed result analysis. Supports all regex flavors with interactive examples.
/
/gi

Match Details (0)

Ready to Test

Quick Reference

.
Any char
\d
Any digit
\w
Word char
\s
Whitespace
*
0 or more
+
1 or more
?
0 or 1 time
|
Alt (OR)
What is Regular Expression?

A Regular Expression (regex) is a sequence of characters that defines a search pattern. It is commonly used for string matching, validation, and text parsing.

How it works

Pattern Matching

Regex patterns are applied to a string to find matches. Flags modify how matching behaves, such as global search or case insensitivity.

Flags Usage

Flags like 'g' (global) find all matches, 'i' ignores case sensitivity, and 'm' allows multiline matching across lines.
Frequently Asked Questions

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