Adam Hultman

Tools

Regex tester.

Uses your browser’s JavaScript regex engine. Patterns run in a separate worker with a one-second time limit. Your text stays in your browser.

Enter the pattern without surrounding slashes. Maximum 500 characters.

g: all matches · i: ignore case · m: multiline · s: dot matches newlines · u: Unicode. Without g, returns the first match.

Maximum 10,000 characters. Match positions use JavaScript’s zero-based UTF-16 indices.

Ready to test.

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