Toolwinder
🧪

Regex Tester

Test regular expressions with live matching, replace, and capture groups. Runs completely in your browser.

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Frequently Asked Questions

Which regex flags are supported?+
Global (g), case-insensitive (i), multiline (m), dot-all (s), and unicode (u) — toggle any combination and matches update live.
Can I see capture groups for each match?+
Yes. Every match lists its numbered and named capture groups below the match text.
Does the Replace mode support capture group references?+
Yes, use $1, $2, etc. in the replacement field to reference captured groups from your pattern.

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