Regex Tester

What is Regex Tester?

Test and debug regular expressions against sample text with real-time highlighting of matches. See capture groups, test different flags, and understand how your regex works. Includes common regex patterns library and explanation of matches.

Features & Benefits

• Real-time match highlighting
• View all matches and groups
• Support for all regex flags (g, i, m, s, u)
• Capture group visualization
• Common patterns library
• Regex explanation and breakdown

Frequently Asked Questions

What regex flavor is supported?

JavaScript regex flavor is used, which is compatible with most modern browsers and Node.js.

Can I see capture groups?

Yes, numbered and named capture groups are highlighted and listed separately for each match.

What flags are available?

All JavaScript flags: global (g), case-insensitive (i), multiline (m), dotAll (s), and unicode (u).

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How-To Guides

Guides

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