Regex Tester & Debugger Online Free

Test and debug regular expressions with real-time matching, highlighting, and group extraction.

100% Client-SideNo Data StoredFree Forever
Regex Tester
//g
global

How to Use Regex Tester

  1. Enter your regular expression pattern.
  2. Toggle flags (g, i, m, s) as needed.
  3. Type test text — matches are highlighted in real time.

About Regex Tester

Test and debug regular expressions in real time. See matches highlighted instantly, with detailed information about each match including position and capture groups. Essential for developers working with string parsing, validation, and text extraction.

Frequently Asked Questions

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