How to use Regex Creator Online
- Drop your pattern and test string into the field at the top of Regex Creator Online.
- Regex Creator Online updates the output automatically as you type.
- Use Copy to keep or reuse the result.
About this tool
Regex Creator Online is a static, client-side tool with no backend. Regex Creator Online runs your pattern locally with the JavaScript engine and shows captures live.
Flags and group captures are surfaced so you can refine the pattern quickly. Nothing you enter is uploaded, and it keeps working offline once the page has loaded.
Frequently asked questions
What does Regex Creator Online do?
Regex Creator Online runs entirely on your device: add your input, and it processes it locally in real time.
Does Regex Creator Online cost anything?
No — Regex Creator Online is completely free, with no sign-up and no hidden limits.
Where is my data processed by Regex Creator Online?
Entirely in your browser — Regex Creator Online keeps your data on your own machine and sends nothing anywhere.
Which regex flavor does Regex Creator Online use?
Regex Creator Online runs your pattern with the browser's own JavaScript regex engine, live and on your device.
Does Regex Creator Online work on mobile?
Yes — Regex Creator Online is just a web page and runs on any modern browser, including phones and tablets.