Regex Tester

A client-side utility to test Regular Expressions against text data, featuring real-time highlighting and capture group extraction.

Fare Basis (Class) Fare Basis (Amounts) Fare Basis (Airports) ISO Date Email

Flags: gm

global (g)Don't return after first match

multi line (m)^ and $ match start/end of line

insensitive (i)Case insensitive match

single line (s)Dot (.) matches newline

unicode (u)Enable full unicode support

Highlights

Extraction (Capture Groups)

About This Project

This utility allows real-time testing of Regular Expressions with immediate visual feedback. It highlights matches and extracts capture groups, making it easier to debug complex patterns like airline fare codes or data validation strings.

• Privacy: Runs entirely in your browser using the JavaScript RegExp engine.
• Features: Real-time highlighting, capture group breakdown, and custom flags (g, m, i, s, u).