Developer Tool

Regex Tester

Test regular expressions in real time with live highlighting, captured group inspection, pattern explanation, replace preview, and a full cheatsheet — all in your browser.

Live

Match Highlighting

5 Flags

g i m s u

10+

Cheatsheet Patterns

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Regex Pattern

//g

Flags:

1 match

Test Text

197 chars4 lines

The quick brown fox jumps over the lazy dog. Email: user@example.com | Phone: (555) 123-4567 Date: 2025-01-15 | Price: $99.99 | IP: 192.168.1.1 Visit https://toolbeans.dev for free developer tools.

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Free Regex Tester — Why Use It?

⚡

Live Highlighting

See matches highlighted in color as you type. No need to click a button — results update instantly.

🧠

Pattern Explanation

Not sure what your regex does? The Explain tab breaks every token down into plain English.

📋

10+ Cheatsheet Patterns

One-click patterns for Email, Phone, URL, Password, IP, Date, Hex Color and more.

↔

Replace Mode

Test find-and-replace operations with capture group references like $1 and $2.

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5 Flag Toggles

Toggle g, i, m, s, u flags with visual buttons. Flag string updates in real time.

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Group Inspector

See every captured group from every match with its index, value, and position.