Tool & Platform Beginner

regex101

LevelBeginner

Who it's forDevelopers writing and debugging regular expressions

LanguageEnglish

PriceFreemium

PricingFreemium

Sign-upNo sign-up

Free tierFree tier allows testing and a limited number of saved regexes

Chinese supportUnverified

TypeTool & Platform

CategoryDeveloper Tools

Link check2026-10-23

Overview

Online regex tester with live match highlighting and step-by-step explanation, supporting PCRE/Python/JavaScript/Go flavors. Usable free tier.

Saving more regexes and code generation require a subscription.

RegexDebuggingDev tools

https://regex101.com/

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