Regex Tester
Essentials only — see also the dedicated Cheatsheets tool for editors and shells.
About this tool
Test JavaScript regular expressions against sample text. Matches are highlighted; capture groups listed below.
Example
Pattern \\\\b(\\\\w+)@(\\\\w+\\\\.\\\\w+)\\\\b, flags g on a paragraph extracts emails with the local-part and domain as groups.