郵編格式

使用方法

1. Select a country from the searchable dropdown to load its postal code rules。
2. Type a postal code into the code field。
3. The tool shows the official regex pattern and a format example for that country。
4. A green 'Valid' or red 'Invalid' label confirms whether the code matches the pattern。

範例

• Selecting Germany (DE) shows the pattern \d{5} with example 10115; entering 10115 returns Valid, while entering 1011 returns Invalid。
• Selecting Canada (CA) shows the pattern [A-Z]\d[A-Z] \d[A-Z]\d with example K1A 0A9; entering K1A 0A9 returns Valid。