Developer tools

RegExr

Build and explain regular expressions against sample text

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About RegExr

RegExr is a browser editor for writing regular expressions and testing them on a sample. The interface highlights matches and provides a reference for syntax, making it easier to see what a pattern is doing while you adjust it. It is useful for learning, debugging a search, or preparing a pattern for a data cleanup task. Test edge cases and confirm the regular-expression engine you will use in production, because syntax and matching behavior vary between environments.

Editorial discovery. Check the official website for current features and pricing. Source: Official product documentation and interface .

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