🔍 Regex Tester

Master Regular Expressions with Our Free Regex Tester

Regular Expressions (Regex) are powerful tools for pattern matching and text manipulation, but they can be notoriously difficult to perfect. Our online Regex Tester simplifies this process by providing a real-time environment to write, test, and debug your patterns against sample text.

Whether you are a seasoned developer validating a complex email validation pattern or a beginner learning the basics of character classes and quantifiers, this tool offers the immediate feedback you need to write efficient and accurate code.

Key Features

• Real-time Matching: See matches highlight instantly as you type your pattern.
• Syntax Highlighting: Easily distinguish between capture groups, character classes, and text.
• Regex Flags: Toggle global (g), case-insensitive (i), multiline (m), and dotall (s) flags.
• Quick Library: One-click access to common patterns like Email, URL, IP Address, and Password validation.

How to Use the Regex Validator

1. Enter your Pattern: Type your regular expression in the "Regular Expression Pattern" field. e.g., \d{3}-\d{2}-\d{4}
2. Set Flags: Use the checkboxes to enable flags like 'Global' to find all matches or 'Insensitive' for case-insensitive matching.
3. Input Test Text: Paste or type the text you want to test in the text area.
4. Analyze Results: Matches will be highlighted in the text, and a detailed list of matches will appear in the specific results pane.

Frequently Asked Questions