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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.
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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
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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.
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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
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HOW IT WORKS
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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
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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
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BUILT BY ZOVO
Part of the Zovo extension family — premium tools for developers and power users.
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