How to Test & Debug Regular Expressions (Regex) in Real Time

Published: 2026-02-05 | Read Time: 4 min read

Test regular expressions against sample text with live color match highlighting, capture group extraction, and regex flag controls.

Frequently Asked Questions

What do regex flags like g, i, and m mean?

`g` (global match all instances), `i` (case-insensitive), `m` (multiline anchor matching for ^ and $), and `s` (dotAll match newlines).