HTML Entity Encoder/Decoder Tool
Convert text to HTML entities and decode HTML entities back to text with various encoding options.
Input
Enter text to encode or HTML entities to decode...
Result
Encoded/Decoded Output
Examples
Basic text with special characters
Hello & World!
Text with symbols
© 2024 All Rights Reserved
HTML code
<div class='container'>Hello World</div>
About HTML Entities
What are HTML Entities?
HTML entities are special characters or symbols that are represented by a specific code in HTML. They are used to display characters that might otherwise be interpreted as HTML markup or to represent characters that are not easily typed on a keyboard.
- Named entities (e.g., &, <, >)
- Numeric entities (e.g., &, <, >)
- Hexadecimal entities (e.g., &, <, >)
- Unicode characters
Common Uses
- Display special characters
- Escape HTML markup
- Represent symbols
- Handle non-ASCII characters
- Ensure cross-browser compatibility
Common Issues
- Double encoding
- Invalid entity codes
- Browser compatibility
- Character encoding
- Performance impact
JavaScript Implementation
HTML entity handling in JavaScript:
encodeURIComponent()decodeURIComponent()escape()unescape()- Regular expressions
Security Considerations
- XSS prevention
- Input validation
- Output encoding
- Character escaping
- Data sanitization
Best Practices
- Use appropriate entities
- Validate input
- Handle edge cases
- Consider performance
- Test thoroughly