Regex Tester

Write a regular expression and see it match against your text instantly, with every match highlighted.

100% free, no signup

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Highlighted matches (3)

ToolHabibi helps Students and Freelancers save Time every day.

Your files are processed in your browser and never uploaded to any server.

How to use this tool

1Type your regex pattern between the slashes.
2Add flags like g or i in the small box on the right.
3Paste your sample text below.
4Matches are highlighted instantly, with a running match count.

Frequently asked questions

Which regex flavor does this use?+

Standard JavaScript (ECMAScript) regex syntax.

Is my text sent anywhere?+

No, matching happens entirely in your browser.

Regular expressions are powerful but notoriously easy to get subtly wrong, and testing them against real sample text is the fastest way to catch mistakes before they ship. This tool evaluates your pattern using standard JavaScript regex syntax and flags (g, i, m, s, u, y), highlights every match directly in your sample text, and lists the total match count so you can quickly tell if your pattern is too greedy, too strict, or just right.