Text tool

Regex Tester

Run a JavaScript regular expression against sample text with live match highlighting, capture groups and named groups.

Pattern

Flags

Test string

Matches

Capture groups

Uses the JavaScript regular expression engine. Syntax differs in places from PCRE (PHP) and .NET — verify anything you intend to run server-side in its own runtime.

Runs in your browser

This tool is pure client-side JavaScript. Nothing you enter is sent to this server or anywhere else — you can verify it in your browser’s network tab.

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