AI Regex Intelligence Active

Regex Visualizer & AI Pattern Engine

Real-time regular expression tester with capture group extraction, ReDoS catastrophic backtracking safety audits, and step-by-step token explanations.

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Regular Expression Pattern

JavaScript / ECMAScript compliant syntax

/

ReDoS Backtracking Safe

0 matches detected

Test Corpus & Target Strings

Real-time match highlights

Extracted Capture Groups (0)

No matching occurrences found in the provided test string.

AI Token Anatomy Breakdown

Matches standard and corporate email addresses capturing username, domain, and top-level domain.

([a-zA-Z0-9._%+-]+)

Capture Group 1: Matches username containing alphanumeric characters and dots/plus signs.

@

Literal "@" symbol separating user from domain host.

([a-zA-Z0-9.-]+)

Capture Group 2: Matches subdomains and main domain name.

.

Escaped literal period.

([a-zA-Z]{2,})

Capture Group 3: Top-level domain (com, org, edu, io, etc., 2+ letters).

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