Regex Cheat Sheet

About This Tool

The Regex Cheat Sheet is a comprehensive reference covering character classes, quantifiers, anchors, groups, special characters, and flags. Each pattern includes a description and a matching example, with category filtering and search to quickly find what you need.

Key Features

• Six categories: character classes, quantifiers, anchors, groups, special characters, and flags
• Real-time search filtering across all patterns
• Category tab filtering for focused browsing
• Matching examples with highlighted results for every pattern
• One-click copy of any regex pattern to clipboard
• Full i18n support with automatic language switching

Quick Preview

Use Cases

• Quickly look up regex syntax while writing pattern-matching code
• Learn regular expressions through categorized examples and descriptions
• Copy commonly used patterns like email, URL, or digit matchers directly into your project
• Compare greedy vs lazy quantifiers and understand flag behavior
• Onboard new developers by sharing a single-page regex reference