Regex Tester
// Test and debug regular expressions with live matching
//g
#About Regex Tester
Free online regex tester. Write regular expressions and test them against sample text with real-time match highlighting. This tool runs entirely in your browser — your data is never sent to a server. Just paste your input, get instant results, and copy with one click. No sign-up or installation required.
#FAQ
What regex flavour does this use? ▾
This tool uses JavaScript regular expressions (ECMAScript specification), which is the same engine used in web browsers and Node.js.
</> Embed this tool ▾
Copy this code to embed the tool on your website. Adjust the height to fit your layout.
<iframe src="https://www.browserutils.dev/embed/regex-tester" width="100%" height="500" frameborder="0" title="Regex Tester"></iframe>