Regex Examples
Ready-to-test patterns with expected matches and common pitfalls.
Basic email structure validation for common addresses.
URL
Matches common HTTP and HTTPS URLs.
IPv4
Validates dotted IPv4 addresses.
Hex Color
Matches 3-digit and 6-digit hex color strings.
Phone Number
Simple E.164-style international phone format check.
Query String
Matches basic key=value query strings.
JWT Segment
Validates a URL-safe Base64 JWT segment.