Test regular expressions with real-time match highlighting.
Regular expressions (regex) are patterns used to match character combinations in strings. They're used in search, validation, text processing, and data extraction across all programming languages.
[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,} — Emailhttps?://[^\s]+ — URL\d{3}-\d{3}-\d{4} — Phone number^\d{5}(-\d{4})?$ — ZIP code