Regex Tester — Live JavaScript RegExp Tool with Highlighting
Write and test regular expressions with real-time match results. Supports flags (g, i, m, s), error handling, group matches, and copyable results. Works 100% in-browser with no uploads.
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Test Regular Expressions Instantly in Your Browser
ToolMateX’s Regex Tester lets you input a pattern and instantly see highlighted matches within your test string. It supports JavaScript regex syntax and flags like g, i, m, and s. Everything updates live — no button clicks needed.
Use Cases
- ✅ Test JavaScript regex before using in code
- ✅ Parse text, logs, JSON, HTML, etc.
- ✅ Learn regex syntax and behavior
- ✅ Extract or validate emails, URLs, tokens, etc.
Features
- 🎯 Live regex parsing and match highlighting
- ⚙️ Supports
g,i,m,sflags - 🧠 Error handling for malformed patterns
- 📋 Copy matches with one click
- 🔐 100% client-side — safe and fast
Frequently Asked Questions (FAQs)
Why Use ToolMateX
Tired of bloated tool websites with 10 ads per click? This platform is built for speed, simplicity, and reliability. Whether you're debugging JSON or testing colors, we’ve got your back.
Free to Use, Forever
All tools run right in your browser, fast, reliable, and available whenever you need them. No ads, and nothing to install.
Works Offline (Most of Them)
Most of my tools work directly in your browser without needing a server. Perfect for fast workflows (even if you’re offline).
Made by a 1-Person Team
Made by someone who actually uses these tools daily. It’s fast, clean, and made with your workflow in mind, not corporate KPIs.