What regex flags are supported?

Global (g), case-insensitive (i), multiline (m), and dotAll (s).

Does it show capture groups?

Yes. All numbered capture groups are extracted and displayed for each match.

What regex syntax is used?

JavaScript's built-in RegExp engine, supporting lookaheads, lookbehinds, and named groups.

What regex flags are supported?

Global (g), case-insensitive (i), multiline (m), and dotAll (s).

Does it show capture groups?

Yes. All numbered capture groups are extracted and displayed for each match.

What regex syntax is used?

JavaScript's built-in RegExp engine, supporting lookaheads, lookbehinds, and named groups.

Regex Tester & Debugger Online Free

Test and debug regular expressions with real-time matching, highlighting, and group extraction.

100% Client-SideNo Data StoredFree Forever

Regex Tester

Pattern

//g

global

Test String

How to Use Regex Tester

Enter your regular expression pattern.
Toggle flags (g, i, m, s) as needed.
Type test text — matches are highlighted in real time.

About Regex Tester

Test and debug regular expressions in real time. See matches highlighted instantly, with detailed information about each match including position and capture groups. Essential for developers working with string parsing, validation, and text extraction.

Frequently Asked Questions

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