Regex Tester

Test regular expressions against text and inspect matches.

JavaScript Regex

Match Inspector

Capture Groups

Client-side

Regular Expression

Flags

Common flags: g global, i case-insensitive, m multiline, s dotAll, u Unicode, y sticky.

Test Text

Enter the text against which the regex should be tested.

What is a Regular Expression?

A regular expression, commonly called a regex, is a pattern used to search, match, validate, and manipulate text. Regular expressions are widely used in programming, data processing, form validation, log analysis, and search.

Example

\d+

The pattern above matches one or more consecutive digits.

This tester uses the JavaScript RegExp engine available in your browser. All testing happens locally and your test data is not uploaded.