Live Regex Tester

Test and fine-tune your regex in real time directly on web pages, through an intuitive overlay interface.

Live Regex Tester – Test your regular expressions directly on web pages Live Regex Tester is a practical and fast tool that lets you test regular expressions directly on selected text within any web page. No need for external tools — everything happens in a clean, convenient overlay. 🎯 Features: 🔍 Real-time regex testing on selected webpage text ⌨️ Keyboard shortcut to launch the overlay (default: ALT+S) 🎨 Syntax highlighting and intelligent error feedback 🧩 Regex flags (g, i, m, s) with visual toggles 💾 Save, edit, and reload your regex patterns locally 📁 Export patterns to multiple programming languages and manage them with ease Live Regex Tester is the perfect companion for learning, testing, or fine-tuning regular expressions — whether you're debugging simple matches or crafting complex search patterns.