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Regex Tester

Test and debug regular expressions in real-time with match highlighting and capture group support.

//g
Contact us at hello@example.com or support@test.org for help.
hello@example.comIndex: 14
support@test.orgIndex: 35

How to Use

  1. 1Enter your regular expression pattern.
  2. 2Toggle flags (global, case-insensitive, multiline, dotAll).
  3. 3Type or paste your test string to see matches highlighted instantly.
  4. 4View match details including capture groups below.

Why Use This Tool?

Regular expressions are powerful but tricky. This tool gives you instant visual feedback so you can build and debug patterns quickly without leaving your browser.

Frequently Asked Questions