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Regex Tester

Processed in your browser

Real-time JavaScript regular expression tester with live match highlighting, flags, and capture groups.

Regex Pattern & Test String

Regular Expression:

/ /

Test Subject Text:

Matches & Captures

0 matches found

⚡

Regular Expression & Pattern Pipeline

Direct In-Browser Handoff

Chain this tool with complementary private browser utilities for a complete zero-server workflow:

Natural Language to Regex AI

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Regular Expression Visual Component Builder

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RegEx Cheat Sheet & Syntax Reference

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Helpful Examples

Email Regex

user@example.com, test@freeapps.best

How to Use the Regex Tester

Real-time JavaScript regular expression tester with live match highlighting, flags, and capture groups.

Privacy & Data Processing Notice

No user data leaves your browser. Computation is executed entirely on your device. We do not store, view, or transmit your inputs over our network. Your computation remains on your personal machine.

Frequently Asked Questions

What regex engine is used?

The tool uses your browser's native JavaScript RegExp engine for maximum fidelity.

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