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RegExr: Learn, Build, & Test RegEx
RegExr lets you build, test, and learn regular expressions with real-time feedback, syntax highlighting, and helpful community patterns.
Test and learn regex with instant feedback
RegExr is an interactive tool designed to help you learn, build, and test regular expressions right in your browser. Whether you're a beginner or an experienced developer, you can experiment with regex patterns, see instant results, and get clear explanations for each part of your expression.
The site offers syntax highlighting, contextual help, and a built-in cheat sheet to make working with regex less intimidating. You can browse and use community-created patterns, making it easy to find solutions for common tasks. It's great for anyone who wants to improve their regex skills or quickly troubleshoot expressions for projects using PHP, JavaScript, or PCRE.
With RegExr, you can save your work, share patterns with others, and explore a searchable library of examples. It's a handy resource for learning, testing, and mastering regular expressions in a supportive, user-friendly environment.
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Build, test, and debug regular expressions online with instant feedback, syntax highlighting, and helpful explanations for multiple programming languages.
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