What is a regular expression?

A regular expression (regex) is a sequence of characters that defines a search pattern. It's used to find, match, or replace text patterns in strings. For example, \\d+ matches one or more digits, and [a-zA-Z]+ matches one or more letters.

What are regex flags?

Regex flags modify how the pattern matching works. Common flags include: g (global - find all matches), i (case insensitive), m (multiline - ^ and $ match line boundaries), and s (dotall - . matches newlines).

What are some common regex patterns?

Common patterns include: \\d+ (one or more digits), \\w+ (word characters), [a-zA-Z]+ (letters), .*? (non-greedy match), ^ (start of string/line), $ (end of string/line), and \\b (word boundary).

How do I test my regex pattern?

Start with simple patterns and test them on small text samples. Use online regex testers or built-in browser developer tools. The tool will show you if your pattern is invalid and help you debug it.

What is a regular expression?

A regular expression (regex) is a sequence of characters that defines a search pattern. It's used to find, match, or replace text patterns in strings. For example, \\d+ matches one or more digits, and [a-zA-Z]+ matches one or more letters.

What are regex flags?

Regex flags modify how the pattern matching works. Common flags include: g (global - find all matches), i (case insensitive), m (multiline - ^ and $ match line boundaries), and s (dotall - . matches newlines).

What are some common regex patterns?

Common patterns include: \\d+ (one or more digits), \\w+ (word characters), [a-zA-Z]+ (letters), .*? (non-greedy match), ^ (start of string/line), $ (end of string/line), and \\b (word boundary).

How do I test my regex pattern?

Start with simple patterns and test them on small text samples. Use online regex testers or built-in browser developer tools. The tool will show you if your pattern is invalid and help you debug it.

Extract RegExp Matches

Find and extract all parts of text that match a regular expression pattern

Text Tools Utilities

RegexPatternmatching+4 more

Input Text

Extracted Matches

Input Characters

Words

Lines

Total Matches

Unique Matches

Output Length

About RegExp Matching

Global Flag (g): Global Flag (g): Find all matches, not just the first one.

Case Insensitive (i): Case Insensitive (i): Match regardless of case (A = a).

Multiline (m): Multiline (m): ^ and $ match start/end of each line, not just the string.

Dot All (s): Dot All (s): The . character matches newline characters as well.

Common Patterns: Common Patterns: \d+ (numbers), \w+ (words), [a-zA-Z]+ (letters), .*? (non-greedy match)

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Input Type

Text

Output Type

Processed Text

About the tool: Extract RegExp Matches

Find and extract all parts of text that match a regular expression pattern

This text tool is designed to help you regex, pattern, matching quickly and efficiently. Whether you're a professional developer, content creator, or just need to process data, this tool provides a simple, user-friendly interface for all your text needs.

Our Extract RegExp Matches tool is completely free to use, requires no registration, and works entirely in your browser. Your data is processed locally and never sent to our servers, ensuring complete privacy and security.

The tool supports various input formats and provides instant results, making it perfect for both one-time tasks and regular workflow integration. All processing is done client-side for maximum speed and privacy.

How to use tool: Extract RegExp Matches

Prepare Your Input

Enter your text in the input field. You can paste from clipboard, type directly, or use the example data provided.

Process Your Data

Click the process button to convert/transform your data. The tool will automatically process your input and display the results in real-time.

Copy and Use Results

Copy the result from the output field. You can also download the results as a file if supported by the tool.

💡 Pro Tips

• Use the "Try Example" button to see how the tool works with sample data
• Large inputs are processed efficiently - no size limits for most operations
• Results are automatically copied to your clipboard for easy pasting
• All processing happens in your browser - your data never leaves your device

Features & Benefits

100% Free & No Registration

Use this tool completely free without any signup requirements or hidden costs.

Privacy-First Design

All processing happens in your browser - your data never leaves your device.

Instant Results

Get immediate results with real-time processing and no waiting times.

Cross-Platform Compatible

Works on any device with a modern web browser - desktop, tablet, or mobile.

Professional Quality

Built with enterprise-grade reliability and accuracy for professional use.

Easy to Use

Intuitive interface designed for users of all technical skill levels.

Frequently Asked Questions

General Questions

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