KK Tools
by KreateKode
KK Tools/Utilities/Regex Tester & Validator
🔍
Utilities

Regex Tester & Validator

Test and validate JavaScript regular expressions with live matches, capture groups, and regex flags while keeping your data private in the browser.

Use Tool →About This Tool

Key Capabilities

Live Matching

Test your regular expression instantly against text and immediately see matched results and total counts.

Capture Group Extraction

Automatically extract both numbered and named capture groups from your matches for easy inspection.

100% Client-Side Privacy

Regex patterns and test text never leave your browser. Zero network requests mean zero data leaks.

ReDoS Protection

Safeguarded against catastrophic backtracking using execution timeouts and strict boundary limits to keep your browser fast.

Privacy & Data Handling

Your data is processed locally.

  • Data uploaded: No
  • Data stored: No

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