Regex Examples Library
Rich regular expression template collection with one-click copy support
Email Address
Contact^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$
Matches standard email format, supports international domains
Test Examples:
✓ test@example.com
✗ test@.com
Phone Number
Contact^1[3-9]\d{9}$
Matches Chinese mainland phone numbers
Test Examples:
✓ 13812345678
✗ 12812345678
ID Card
Identity^\d{17}[\dXx]$
Matches 18-digit ID card numbers, supports X ending
Test Examples:
✓ 110101199001011234
✗ 11010119900101123
IP Address
Network^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$
Matches IPv4 address format
Test Examples:
✓ 192.168.1.1
✗ 256.1.1.1
URL Link
Network^https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)$
Matches HTTP/HTTPS links
Test Examples:
✓ https://www.example.com
✗ www.example
Date Format
Format^\d{4}-\d{2}-\d{2}$
Matches YYYY-MM-DD format date
Test Examples:
✓ 2025-10-21
✗ 2025-10-1
Time Format
Format^([01]?[0-9]|2[0-3]):[0-5][0-9]:[0-5][0-9]$
Matches HH:MM:SS format time
Test Examples:
✓ 23:59:59
✗ 24:00:00
Chinese Characters
Text[\u4e00-\u9fa5]
Matches Chinese characters
Test Examples:
✓ 你好世界
✗ hello world
Numbers and Letters
Text^[a-zA-Z0-9]+$
Matches strings containing only numbers and letters
Test Examples:
✓ abc123
✗ abc-123