Regex Tester: Test Regular Expressions Online

Introduction

Regular Expressions (Regex) are incredibly powerful for pattern matching, but they are also notoriously difficult to write. A single missing character can break everything. TekToolHub's **Regex Tester** is your sandbox for perfecting your patterns.

Features

• **Real-time Matching:** Highlights matches as you type.
• **Flags:** Support for global (g), case-insensitive (i), and multiline (m) flags.
• **Cheatsheet:** Quick reference for common tokens (digits, whitespace, etc.).

Common Patterns

• **Email:** `^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$`
• **Date (YYYY-MM-DD):** `\d{4}-\d{2}-\d{2}`
• **Phone:** `\d{3}-\d{3}-\d{4}`

How to Use

1. **Enter Regex:** Type your pattern in the top box.
2. **Enter Test Text:** Paste the text you want to search.
3. **Analyze:** See highlighted matches and groups instantly.

Master the art of Regex with **Regex Tester**.