Regex Tester

Test matches and capture groups against sample text.

This utility processes input in your browser. Files and text are not uploaded to CoreyMcDaniel.com. The DNS tool is the exception: it contacts Cloudflare DoH only after you press Resolve.

How it works

Test matches and capture groups against sample text. Output can be copied, printed, or downloaded from this page. Use the result as a starting point and verify anything that will ship to production.