Regex GeneratorBrowse and copy common regex patterns for emails, URLs, phones, and more.

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Regex Generator

Browse and copy common regex patterns for emails, URLs, phones, and more.

How to Use

Search or Browse

Search for a pattern or browse the categorized list.

Find Pattern

Find the regex pattern that matches your needs.

Copy Pattern

Copy the regex pattern for use in your code.

What Is Regex Generator?

The Regex Generator is a searchable library of common regular expression patterns. It includes ready-to-use patterns for matching emails, URLs, phone numbers, IP addresses, dates, times, hex colors, credit cards, passwords, HTML tags, hashtags, mentions, and many more. Each pattern includes a description of what it matches. Search by name or description to quickly find the pattern you need, then copy it to your clipboard for immediate use in your code or tools.

Why Use Our Regex Generator?

Save time with pre-built regex patterns
Avoid common regex mistakes with tested patterns
Searchable library for quick pattern lookup
One-click copy for immediate use

Common Use Cases

Development

Quickly grab regex patterns for input validation in your applications.

Data Extraction

Find patterns for extracting specific data types from text.

Form Validation

Use validated patterns for form field validation.

Learning

Study common patterns to improve your regex skills.

Technical Guide

The library contains over 20 curated regex patterns organized with name, pattern string, and description. Patterns are designed for JavaScript regex syntax but are generally compatible with other regex engines (PCRE, Python, etc.). The search feature filters patterns by name and description using case-insensitive string matching. Each pattern can be copied to the clipboard with a single click. Patterns use standard regex features like character classes, quantifiers, alternation, lookahead, and capturing groups. Some patterns like the password validator use lookahead assertions for multiple simultaneous conditions.

Tips & Best Practices

1
Search by what you want to match (email, phone, date, etc.)
2
These patterns work in JavaScript and most other languages
3
Test copied patterns with the Regex Tester tool
4
Patterns may need adjustment for specific requirements

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Frequently Asked Questions

QAre these patterns production-ready?

They cover common cases but may need adjustment for edge cases in production environments.

QDo the patterns work in Python/Java/other languages?

Most patterns use standard regex syntax compatible across languages. Some JavaScript-specific features may need adaptation.

QCan I request a new pattern?

The library includes the most commonly needed patterns. For custom patterns, use the Regex Tester to build and test your own.

QHow do I use a copied pattern?

Paste the pattern into your code as a regex literal (e.g., /pattern/flags in JavaScript) or as a string for RegExp constructor.

QAre the patterns case-sensitive?

Most patterns match specific cases. Add the i flag when you need case-insensitive matching.

About Regex Generator

Regex Generator is a free online tool from FreeToolkit.ai. All processing happens directly in your browser — your data never leaves your device. No registration required. No ads. Just fast, reliable tools.