HTML實體轉換器

編碼和解碼HTML實體以防止XSS攻擊並安全顯示特殊字元。

🔒 HTML Encode

Encoding Format:

Named (<)Decimal (<)Hexadecimal (<)

Encode Everything (including safe characters)

Input (Plain Text):

Output (HTML Entities):

Output will appear here...

💡 Common HTML Entities

CharacterNamedDecimalHex

<<<<

>>>>

&&&&

""""

''''

©©©©

€€€€

🔒 Prevent XSS

Encode user input to prevent cross-site scripting attacks

📝 Display HTML

Show HTML code as text without executing it

🔄 Data Transfer

Safely transmit special characters in URLs and forms

🌐 Internationalization

Handle unicode characters across different systems

主要功能

• 雙向轉換（編碼 ↔ 解碼）
• 多種編碼格式：命名、十進位、十六進位
• 即時轉換

使用案例

防止XSS攻擊、顯示HTML程式碼

相關工具

• Base64 Encoder
• URL Encoder