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Regex Tester

Test regular expressions online with live match highlighting and capture groups.

Frequently Asked Questions

What is a Regex Tester?

It tests a regular expression against sample text and shows matching results.

What are regexes used for?

They are commonly used to search, extract, replace, and validate text patterns.

Can I use regex flags?

Yes, common JavaScript flags can be entered with the expression.

Does it show capture groups?

Yes, match details can include captured groups.

Can I test multiline text?

Yes, paste multiline content into the test area.

Is it free?

Yes, it works online without an account.