Test regular expressions against strings. See matches highlighted in real-time with capture groups. Built for developers and technical teams who need fast, accurate, repeatable workflows.
Regular expressions (regex) are patterns used to match character combinations in strings. They are powerful tools for text processing, validation, and data extraction.
Common flags include: g (global - find all matches), i (case-insensitive), m (multiline - ^ and $ match line boundaries), and s (dotall - . matches newlines). Capture groups with parentheses let you extract specific parts of the match.
Enter a regex pattern (without the surrounding slashes).
Paste your test string to match against.
Toggle flags and view matches in real-time.
Developer utilities