Regex Tester & Builder
Test regular expressions against sample text with real-time matching. Includes common security patterns for bug bounty hunting and input validation.
What is Regex Testing?
Regular expressions are essential for bug bounty hunting — parsing HTTP responses, extracting data from JavaScript files, validating input, and building WAF bypass payloads. This free regex tester supports common flags (i = case insensitive, m = multiline, s = dotall) and displays match positions and capture groups.