UniToolHub

Regex Tester

Test and debug regular expressions in real-time.

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About Regex Tester

Test and debug Regular Expressions (Regex) in real-time. See matches highlighted as you type your pattern and test strings.

How to Use

  1. 1

    Enter Pattern

    Type your regular expression pattern.

  2. 2

    Set Flags

    Add any required flags like 'g' or 'i'.

  3. 3

    Provide Test String

    Type text to see if your pattern matches it.

Examples

Email validation
Input: \b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b
Output: Matches email addresses

Frequently Asked Questions

Which Regex engine is used?
This tool uses the native JavaScript regex engine (ECMAScript).
Can I test global flags?
Yes, you can toggle global, case-insensitive, and multiline flags.