Regex Tester Pro

Test, debug and master regex in your browser. AI-powered generation, multi-flavor support, and real-time match highlighting.

Tired of switching to regex101 every time you need to test a pattern? Stop context-switching and start testing regex right inside your browser. Regex Tester Pro gives you a lightning-fast, offline regex engine with real-time match highlighting, capture group inspection, and AI-powered pattern generation — all in a clean popup. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ WHY REGEX TESTER PRO? Unlike other regex tools, Regex Tester Pro: • Works 100% offline — no data ever leaves your browser • AI generates regex from plain English descriptions • Right-click any selected text to test it instantly ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ FEATURES ✦ Real-Time Match Highlighting See matches light up instantly as you type your pattern. Zero lag, zero waiting. ✦ AI Regex Generation (3 free/day) Describe what you want to match in plain English. Get a working regex pattern in seconds. ✦ Capture Group Inspector View numbered and named capture groups from your first match. Debug complex patterns without guesswork. ✦ Find & Replace Test regex-based string replacements live. See the output update as you refine your pattern. ✦ One-Click Flag Toggles Switch between g, i, m, s, u, y flags with a single click. No typing, no syntax errors. ✦ Context Menu Integration Select text on any page, right-click, and test regex on it immediately. The fastest way to go from idea to pattern. ✦ Pattern History Save up to 10 patterns for free (unlimited with Pro). Recall and reuse your favorites. ✦ Dark Mode Automatic system theme detection or manual toggle. Easy on the eyes during late-night debugging. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ PERFECT FOR → Web developers who write validation patterns daily → Data engineers who parse logs and extract structured data → QA engineers who build test assertions with regex → Students learning regular expressions hands-on ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ HOW IT WORKS 1. Click the extension icon to open the popup 2. Type or paste your regex pattern 3. Enter a test string and see matches highlighted in real-time ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ PRIVACY & TRUST ✓ No data collection — zero analytics, zero tracking ✓ Works 100% offline — your patterns stay on your device ✓ No remote code execution ✓ Open source: github.com/theluckystrike/regex-tester-pro ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ PERMISSIONS EXPLAINED storage: Saves your settings and pattern history locally on your device activeTab: Lets the context menu interact with selected text on the current page contextMenus: Adds "Test regex on selection" to your right-click menu alarms: Resets daily AI usage counter and refreshes license status ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ BUILT BY ZOVO Part of the Zovo extension family — premium tools for developers and power users. 🌐 Website: https://zovo.one 📧 Support: [email protected] 💬 Feedback: We read every message