Regex Tester

Test and debug regular expressions in real-time. Highlights matches and captures groups.

//
Welcome to the ToolsDaily Regex Tester. Try matching Words like This.

Matches Found: 7

#MatchIndexGroups
1Welcome0$1: W
2ToolsDaily15$1: T
3Regex26$1: R
4Tester32$1: T
5Try40$1: T
6Words53$1: W
7This64$1: T

Quick Reference

  • [abc] - A single character: a, b or c
  • [^abc] - Any single character but a, b, or c
  • [a-z] - Any single character in the range a-z
  • a+ - One or more of a
  • a* - Zero or more of a

Frequently Asked Questions

What are Regex flags?

Flags change how the regex engine interprets the pattern. 'g' (global) finds all matches, 'i' (case insensitive) ignores case, 'm' (multiline) matches per line.

Is this tool compatible with all Regex flavors?

This tool uses the browser's JavaScript RegExp engine. It supports standard JS regex syntax.