Regex टेस्टर

What are Regular Expressions?

Regular expressions (regex) are patterns used to match character combinations in strings. They are powerful tools for searching, validating, and manipulating text data in programming.

How to Use This Tool

1. Enter your regex pattern in the pattern field
2. Select the flags you need (global, case-insensitive, multiline)
3. Enter or paste your test text in the test string field
4. View highlighted matches and match details in real-time

Pro Tips

• Use the global flag (g) to find all matches, not just the first one
• The multiline flag (m) makes ^ and $ match line starts/ends
• Escape special characters like . * + ? with a backslash (\)

Browser Support

Regular expressions are natively supported in all modern browsers through JavaScript's RegExp object. This tool uses standard JavaScript regex syntax.