UtilShelf

Regular Expression Tester

Shows where a JavaScript regular expression matches, and its capture groups, entirely in your browser.

Everything you enter is processed in your browser. Nothing is sent or stored.

Input

Enter a JavaScript regular expression. / 2,000 characters at most
Flags
The u and v flags cannot be used together.
Up to 100 KiB as UTF-8 (currently 0 bytes).

Matches

Run the test and the matches appear here.