About
Evaluate regular expressions and inspect matched values and groups.
Regular expressions
A regular expression is a compact syntax used to match, extract, and validate text. It is widely used in form validation, search logic, and parsing workflows.
Pattern, flags, and input
Provide a pattern, optional flags, and an input text block. The utility returns all matches with their index positions and captured groups.
Practical use
Use this tool to verify expressions before adding them to production code, test scripts, and validation pipelines.