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Getting Started Guide

Welcome toRegex Arena

Master regular expressions through interactive practice and challenges. Scroll down to explore the platform features.

Regex Quick Reference

Essential patterns to get you started

Character Classes

\dAny digit
\wWord character
\sWhitespace
.Any character

Quantifiers

+One or more
*Zero or more
?Optional
{n,m}Between n-m

Regex Lab - Your Interactive Sandbox

Start your regex journey in the Lab. Write patterns, test against your data, and see real-time matches with detailed feedback. Support for JavaScript, PCRE, Python, and .NET engines. No sign-up required!

Test Patterns with Live Matching

Enter your test data and watch as matches are highlighted in real-time. See detailed information about each match including position, length, and capture groups. Refine your patterns instantly with visual feedback.

Tackle Real-World Challenges

Put your skills to the test with community-created challenges. Each challenge includes public test data and hidden datasets to validate your solutions. Score based on F1 metrics considering precision and recall.

Compete on Leaderboards

Compare your solutions with others on per-challenge leaderboards. See who has the best F1 score and climb the global ELO rankings. Each successful submission earns you rating points.

Track Your Progress & Stats

Monitor your improvement with detailed statistics. Track ELO rating, challenges completed, win rate, and more. Save your favorite patterns to your library and share them with others.

Interactive regex testing with instant feedback

\d3-\d3-\d4

Ready to Get Started?

Jump into the Regex Lab and start testing patterns right away, or browse challenges to put your skills to the test!

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