How to use Online Regular Expression Generator
- Type or paste your text into Online Regular Expression Generator's input area.
- The result is computed live in your browser as you edit the input.
- When it looks right, Copy to save it.
About this tool
Online Regular Expression Generator runs entirely in your browser. Online Regular Expression Generator tests your regular expression against sample text in your browser, highlighting matches as you type.
Flags and group captures are surfaced so you can refine the pattern quickly. Your input never leaves the page, and no account or install is required.
Frequently asked questions
How do I use Online Regular Expression Generator?
Online Regular Expression Generator lets you generate your input right in the browser, with the result shown instantly and nothing uploaded.
Does Online Regular Expression Generator cost anything?
No — Online Regular Expression Generator is completely free, with no sign-up and no hidden limits.
Does Online Regular Expression Generator upload my data?
No — Online Regular Expression Generator processes everything locally in your browser, so nothing you enter is uploaded or stored.
Which regex flavor does Online Regular Expression Generator use?
Online Regular Expression Generator runs your pattern with the browser's own JavaScript regex engine, live and on your device.
Does Online Regular Expression Generator work on mobile?
Yes — Online Regular Expression Generator is just a web page and runs on any modern browser, including phones and tablets.