Regular Expression (RegEx) Tester

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Test regex patterns with flags, group captures, and live matches.

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//gi

Pattern verified against common catastrophic backtracking vulnerabilities.

Presets:

Test String

Matches (2)

Match #1Offset: 32

support@omnikite.com

Match #2Offset: 56

security@omnikite.dev

Production Code Integration

const regex = new RegExp("[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,}", "gi");
const matches = [...testString.matchAll(regex)];
console.log(matches.map(m => m[0]));

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All computation executes exclusively inside your device memory using Web APIs and WebAssembly. No data or files ever leave your browser.

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Zero network roundtrips. Operates offline without sending external API requests, delivering instantaneous sub-millisecond computation.

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Engineered with RFC standards, cryptographic primitives (Web Crypto Subtle API), and production-grade formatting libraries.

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