Regex tester
Content stays local in your browser. Do not paste sensitive tokens or private data.
Search and use guide
Regex tester
Test JavaScript regex patterns and list matches and groups. privacy-first-browser-tooling
Who it helps
- Test JavaScript regex patterns and list matches and groups.
- Test JavaScript regex patterns and list matches and groups. Inputs stay local; results are estimates or formatting aids.
- test c(a)t against "cat bat cat" to see match count and captured groups.
What you can enter
- test c(a)t against "cat bat cat" to see match count and captured groups.
- Test JavaScript regex patterns and list matches and groups. Inputs stay local; results are estimates or formatting aids.
How to read results
Test JavaScript regex patterns and list matches and groups. Inputs stay local; results are estimates or formatting aids. privacy-first-browser-tooling
Data and privacy
GoGo Tools records analytics by tool slug only and does not include your input values. privacy-safe-analytics-only
Feedback
How can we improve this tool?
Send a suggestion or bug report for this tool.
FAQ
Is data uploaded?
No. This tool runs locally in the browser; analytics records only the tool slug.
Can I use the result officially?
Use it for quick estimates and drafts; verify source data, local rules, or professional advice for official use.
Does it work on mobile?
Yes. The page is responsive for phones and desktop browsers.
Can this be used globally?
Yes. Adjust inputs for your local rules, tax rates, time zones, or holidays.