RegExr
Learn, Build, & Test Regular Expressions online
RegExr is a web-based tool for writing, testing, and learning regular expressions. It supports JavaScript and PHP/PCRE regex engines with real-time match highlighting, a full reference cheat sheet, and contextual help. Users can save and share expressions and browse a searchable library of community-contributed patterns.
Users type a regex and test string into an online editor that highlights matches in real time, with contextual explanations, a cheat sheet, and community patterns available alongside.
software developers and anyone learning or working with regular expressions
Background.
- Status
- launched
- Business model
- free
Contact
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