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Test regex patterns in real time with live match highlighting, capture group breakdown, and a built-in library of common patterns. 🔍 MASTER REGULAR EXPRESSIONS Regex Tester Live is your ultimate tool for writing, testing, and debugging regular expressions directly in your browser. ✨ KEY FEATURES: ⚡ LIVE TESTING • Real-time match highlighting as you type • Instant feedback on pattern validity • Test against multiple sample strings • See exactly where matches occur 🎯 CAPTURE GROUPS • Visual breakdown of all capture groups • Named group support • Group highlighting in different colors • Easy extraction of matched values 📚 PATTERN LIBRARY • Common regex patterns built-in • Email, phone, URL validators • Date/time patterns • Credit card formats • Custom patterns you can save 🛠️ DEVELOPER TOOLS • Multiple regex flags (g, i, m, s, u) • Quick reference cheat sheet • Export to multiple languages • Copy as JavaScript, Python, PHP ⚙️ CUSTOMIZATION • Dark mode interface • Adjustable font size • Persistent pattern history • Keyboard shortcuts 🏆 WHY REGEX TESTER LIVE? ✓ No more switching to online testers ✓ Works offline - all processing local ✓ Beautiful glassmorphism UI ✓ 3-day free trial, then just $0.99/month ✓ Privacy-first: your patterns stay on your device 💡 PERFECT FOR: • Web developers • Data analysts • QA engineers • Anyone working with text patterns Start your free trial today and master regex!
Apr 3, 2026
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Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.