Regex Tester
Test regular expressions with real-time matching, capturing groups, and explanation.
5 of 5 uses remaining today
/
/Zenovay
Track your website performance
Real-time analytics, session replay, heatmaps, and AI insights. 2-minute setup, privacy-first.
Related Tools
JSON Formatter & ValidatorFormat, validate, and beautify JSON data with syntax highlighting and error detection.
JWT DecoderDecode and inspect JWT tokens. View header, payload, and verify signatures.
Base64 Encode/DecodeEncode text to Base64 or decode Base64 back to text. Supports UTF-8 and binary data.
URL Encode/DecodeEncode or decode URL components. Handle special characters, query strings, and full URLs.
Frequently Asked Questions
Is my data secure?▾
Yes, all regex matching happens in your browser. No data is sent to any server.
Which regex flavor does this use?▾
This tool uses JavaScript regular expressions (ECMAScript standard), which is the same regex engine used in modern browsers and Node.js.
What are regex flags?▾
Flags modify how the pattern is applied. g (global) finds all matches, i (case-insensitive) ignores case, m (multiline) makes ^ and $ match line boundaries, and s (dotAll) makes . match newlines.