OpenTool

Regex Tester

Test and debug your regular expressions with real-time matching and highlighting.

Results:

Features

Real-time Testing

Test your regular expressions instantly with immediate feedback.

🎯

Match Highlighting

Visual highlighting of matched patterns in your text.

⚙️

Advanced Options

Support for global, case-insensitive, and multiline matching.

How It Works

1️⃣

Enter Your Text

Input the text you want to test against.

2️⃣

Write Your Pattern

Enter your regular expression pattern.

3️⃣

Get Results

View matched patterns with highlighting.

What Our Users Say

"This regex tester has become an essential part of my development workflow. The highlighting feature is particularly useful."

— John, Full Stack Developer

"The real-time testing and multiple options make debugging regular expressions much easier. Highly recommended!"

— Sarah, Backend Developer

"Clean interface and powerful features. Exactly what I need for testing complex regex patterns."

— Mike, System Administrator

Frequently Asked Questions

What is a regular expression?

A regular expression is a sequence of characters that defines a search pattern, used for pattern matching within strings.

What do the regex options mean?

Global (g) matches all occurrences, Case Insensitive (i) ignores case, and Multiline (m) allows matching across multiple lines.

Is my data secure?

Yes, all processing is done locally in your browser. Your data never leaves your device.

Can I use this tool offline?

Currently, the tool requires an internet connection to load, but all processing happens in your browser.