About this tool
Regex Tester is part of our Developer Tools collection. It is designed for a clear, fast workflow with practical options, useful output, and privacy-aware processing.
Regex Tester
Test regular expressions and view matches.
✓Your files are processed in your browser — nothing is uploaded to our servers.
Privacy-first processing
Your files are processed in your browser — nothing is uploaded to our servers.
Frequently asked questions
Can I use Regex Tester for free?
Yes. You can use the core Regex Tester workflow for free.
How are my files handled?
Your files are processed entirely in your browser. File contents are never uploaded to our server.