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Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/.NET, Rust.
RegExr is an online tool to learn, build, & test Regular Expressions (RegEx / RegExp). Supports JavaScript & PHP/PCRE RegEx. Results update in real-time as you type. Roll over a match or expression for details. Validate patterns with suites of Tests. Save & share expressions with others.
Regular Expression Tester with highlighting for Javascript and PCRE. Quickly test and debug your regex.
Pattern strings are treated as UTF-16. Also causes escape sequences to match unicode characters. Level up your regex skills with Regexr101. Effortlessly test, debug, and optimize your regular expressions using our syntax-highlighted tester.
Our Regex Tester Online simplifies the learning curve by providing an intuitive interface for creating, testing, and debugging your regex patterns. See immediate visual feedback on matches and explore detailed information about each match by simply hovering over the highlighted text.
An explanation of your regex will be automatically generated as you type. Detailed match information will be displayed here automatically. Online regex tester, debugger with highlighting for PHP, PCRE, Python and JavaScript.
Regular Expression Tester. free regex tool for testing Javascript and PCRE reference, and popular community patterns.
RegExr is an online tool to learn, build, & test Regular Expressions (RegEx / RegExp). Results update in real-time as you type. Roll over a match or expression for details.
Test your regex by visualizing it with a live editor. JavaScript, Python, and PCRE.
Test and validate your regular expressions with our easy-to-use online Regex Tester tool. Instantly see matches and capture groups.