Regex Tester

Test and debug regular expressions with live match highlighting and group display.

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About this tool

Type
Text
Category
Developer
Last updated
10 Mar 2026

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About Regex Tester

The Regex Tester lets you write and test regular expressions with real-time feedback. Enter a pattern and test string, choose flags (case-insensitive, multiline, global), and see all matches, capture groups, and their positions highlighted. Supports PHP-compatible PCRE syntax.

How to use Regex Tester

Open the tool

Navigate to Regex Tester on Xuvero — no registration required.

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Type or paste the text you want to process into the input field.

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<iframe src="https://xuvero.com/en/tools/regex-tester/embed" width="100%" height="480" style="border:none;border-radius:12px;" loading="lazy" title="Regex Tester"></iframe>

Preview: https://xuvero.com/en/tools/regex-tester/embed

Frequently Asked Questions

The tool uses PHP PCRE (Perl-Compatible Regular Expressions) syntax, which is compatible with most modern regex engines.
Supported flags: g (global — find all matches), i (case-insensitive), m (multiline), s (dot matches newline).
Use parentheses to create capture groups, e.g. (\d+)-(\w+). The tool will display the value of each group separately.
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