Developer Reference
Regular Expressions Cheat Sheet & Top 10 Production Regex Patterns
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Regular expressions (regex) are ubiquitous in input validation, text scraping, and log parsing. However, due to their compact syntax, crafting error-free patterns can be intimidating. Here is your reference guide to production-tested regex patterns.
Essential Common Patterns
1. RFC-5322 Email Validation
[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,}2. HTTPS URL Validator
https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)3. UUID v4 Pattern
[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}Test Your Regex in Real-Time
Instant match highlighting and capture group inspection.
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