Regex Tools

Regular expressions are a powerful pattern-matching language used across virtually all programming languages, text editors, and command-line tools. Our Regex Tester provides a live, interactive environment for developing and testing regular expression patterns. Write your regex, input your test string, and instantly see matches highlighted with capture groups. Regular expressions can be notoriously tricky — even experienced developers often need to test and iterate on patterns. Our Regex Tester makes this process fast and visual, with support for common flags like global, case-insensitive, and multiline matching. The tool supports JavaScript-flavored regex, which covers the vast majority of web development use cases. Whether you're validating user input, parsing log files, extracting data from text, or building search functionality, our regex tools help you get patterns right the first time.