Regex Tester with Live Match Highlights

Paste sample text and a regular expression to see matches in real time. Nothing leaves this browser.

Sample textRegular expression

Matches

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<iframe src="https://lucentool.com/regex-tester" width="100%" height="650" style="border:1px solid #e5e0d8;border-radius:12px;max-width:850px;width:100%;" frameborder="0"></iframe>
<div style="font-size:12px;color:#78716c;margin-top:6px;font-family:sans-serif;">Powered by <a href="https://lucentool.com/regex-tester" target="_blank" style="color:#c85a32;text-decoration:none;">Lucentool - Regex Tester with Live Match Highlights</a></div>

HTML Embed Code (iframe):

<iframe src="https://lucentool.com/regex-tester" width="100%" height="650" style="border:1px solid #e5e0d8;border-radius:12px;max-width:850px;width:100%;" frameborder="0"></iframe>
<div style="font-size:12px;color:#78716c;margin-top:6px;font-family:sans-serif;">Powered by <a href="https://lucentool.com/regex-tester" target="_blank" style="color:#c85a32;text-decoration:none;">Lucentool - Regex Tester with Live Match Highlights</a></div>

Usage

Use JavaScript regular-expression syntax. The tester uses the global flag so every match is listed; capture groups are included when present.

Regex Tester with Live Match Highlights

Usage

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