Regex Tester & Generator

Matches:

    Highlighted Test String:

    Explanation:

    No pattern to explain.

    🧩
    Regex Generator
    Quickly build complex regex patterns with guided options.
    Instant Testing
    Live feedback with match highlighting as you type.
    📱
    Mobile & Desktop
    Seamless responsive interface on any device.
    🧠
    Real-Time Suggestions
    Intelligent hints and autocomplete for regex tokens.
    🕵️
    Debug Mode
    Step through and understand how your regex operates.
    📚
    Regex Library
    Ready-to-use common patterns plus detailed documentation.

    About This Regex Tester & Generator

    This free Regex Tester & Generator helps developers, students, and professionals craft and analyze regular expressions with ease. The tool provides live regex testing, highlights matches directly, and offers guided generation of patterns. Everything happens in your browser—no data is uploaded. With accessibility-friendly design, helpful tips, and a curated library of common patterns, learning and using regex becomes faster and easier.

    Frequently Asked Questions

    What is a regex?
    Regex (Regular Expression) is a sequence of characters that defines a search pattern, commonly used for text matching and validation.
    How does the tester work?
    Enter regex and test text—the tool instantly shows matches, groups, and captured values in real-time.
    Is this regex tool free?
    Yes, it’s 100% free forever. No registration, ads, or hidden fees.
    Does this support all regex features?
    It follows JavaScript-compatible regular expressions including groups, lookaheads, and quantifiers.
    Is my input sent to a server?
    No, all regex processing happens directly in your browser for privacy.
    Can I share regex patterns?
    Yes, copy and share your regex easily, or save them manually on your system.
    Does it support regex flags?
    Yes, you can toggle common flags like global (g), case-insensitive (i), and multiline (m).
    Does it explain regex?
    Yes, the explanation tool breaks down your regex into understandable parts.
    Can I test on mobile?
    Absolutely, it’s fully responsive and optimized for all devices.
    Does it suggest patterns?
    Yes, the generator mode offers ready-to-use templates for common use cases.
    Does it support multiline inputs?
    Definitely, paste or type multi-line text and see regex match highlights instantly.
    Can I use lookaheads/backreferences?
    Yes, advanced regex tokens like lookahead, lookbehind, and backreferences are supported.
    Is this for beginners too?
    Yes! Tips and examples make regex less intimidating for newcomers.
    Does it explain regex errors?
    Yes, helpful error messages guide you when syntax issues occur.
    Can I export regex?
    You can copy regex and explanations to share or integrate into your project.
    Which regex engine does it use?
    It uses the JavaScript `RegExp` engine, commonly implemented across many environments.
    Can I visualize matches?
    Yes, matches are highlighted in real-time against your sample text.
    Are there keyboard shortcuts?
    Yes, quick copy and navigation shortcuts are supported for efficiency.
    Does this support Unicode?
    Yes, Unicode and advanced regex tokens can be applied.
    Will it get new features?
    Yes, it’s consistently updated with regex optimizations and new tools.