Regex Tester - Live Match

Test your regular expressions instantly and see live match highlights as you type.

Key Features

Real-Time Regex Matching
As soon as you type a pattern, matched portions in your test text are instantly highlighted in yellow. See match count, positions, and captured groups at a glance.

Auto-Generate Code Snippets in 9 Languages
Your regex is instantly converted to ready-to-use code in JavaScript, Python, Dart, Java, Kotlin, Swift, Go, PHP, and Ruby. One tap to copy directly into your project.

Regex Cheat Sheet (40 Patterns)
Anchors, character classes, quantifiers, groups, escape sequences, plus practical patterns for email, phone, Korean text, IP addresses, dates, and color codes — organized by category. Tap any pattern to apply it instantly.

Regex Flag Support
Toggle case-insensitive (i), multiline (m), and dot-all (s) flags with one tap and see results update immediately.

Who It's For

• Developers learning regex for the first time
• Engineers who want to validate patterns before writing code
• Anyone confused by regex syntax differences across languages
• Developers needing email, phone, or URL validation patterns

Works 100% Offline

No server or internet connection required. Everything runs locally on your device.

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Support URL: https://ddojai.github.io/privacy/