Regex Tester Online

Test JavaScript regex patterns against sample text, debug flags and check matches before using them in code.

Tool

Example

\d+

Test text:

Order number: 12345

Result:

Match found ✔

How to use

1. Enter your regex pattern
2. Paste or type the text to test
3. Click "Test Regex" to see matches

Common use cases

Regex Tester is useful for validating email or URL patterns, matching IDs in logs, extracting text fragments and checking whether a JavaScript regular expression behaves as expected before shipping it.

What is a Regex Tester?

A regex tester is a tool that allows you to test regular expressions against text in real time. Regular expressions are widely used in programming for validation, searching and parsing data.

Using a regex tester helps developers debug patterns, ensure correct matches and avoid errors when working with complex expressions. It is especially useful when validating emails, phone numbers or structured data.

This online regex tester provides a quick and simple way to experiment with patterns and improve your regex skills.

FAQ

Is this regex tester compatible with JavaScript?
Yes. It is designed around JavaScript RegExp behavior, which makes it useful for browser code, Node.js and TypeScript projects.

Can I test regex flags here?
Yes. The tool supports common flags such as global, case-insensitive and multiline.

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