HTML Entities Encode/Decode
Convert special characters to HTML entities or decode HTML entities back to readable text. Essential for web development, preventing XSS attacks, and ensuring proper text display in HTML documents.
Text to Encode
Enter text with special characters to convert to HTML entities
Examples:
HTML Entities
Your text with special characters converted to HTML entities
Understanding HTML Entities
What are HTML Entities?
HTML entities are special codes that represent characters that have special meaning in HTML or characters that cannot be typed directly. They start with & and end with ;.
Common Use Cases
- Preventing XSS attacks in web applications
- Displaying user-generated content safely
- Rendering special characters in HTML documents
- Working with XML and XHTML validation
- Email template development
Common Entities
Security Benefits
HTML entity encoding prevents malicious code injection by ensuring user input is treated as text:
<!-- Dangerous input -->
<script>alert('XSS')</script>
<!-- After encoding -->
<script>alert('XSS')</script>Types of Entities
- Named: & (readable)
- Decimal: & (numeric)
- Hexadecimal: & (hex code)
JavaScript Example
// Encode HTML entities
function encodeHTML(str) {
return str.replace(/[&<>"']/g, (match) => {
const entities = {
'&': '&',
'<': '<',
'>': '>',
'"': '"',
"'": '''
};
return entities[match];
});
}Frequently Asked Questions
Common questions about HTML entity encoding and decoding.
Related Text Tools
Understanding HTML Entities
What are HTML Entities?
HTML entities are special codes that represent characters that have special meaning in HTML or characters that cannot be typed directly. They start with & and end with ;.
Common Use Cases
- Preventing XSS attacks in web applications
- Displaying user-generated content safely
- Rendering special characters in HTML documents
- Working with XML and XHTML validation
- Email template development
Common Entities
Security Benefits
HTML entity encoding prevents malicious code injection by ensuring user input is treated as text:
<!-- Dangerous input -->
<script>alert('XSS')</script>
<!-- After encoding -->
<script>alert('XSS')</script>Types of Entities
- Named: & (readable)
- Decimal: & (numeric)
- Hexadecimal: & (hex code)
JavaScript Example
// Encode HTML entities
function encodeHTML(str) {
return str.replace(/[&<>"']/g, (match) => {
const entities = {
'&': '&',
'<': '<',
'>': '>',
'"': '"',
"'": '''
};
return entities[match];
});
}Frequently Asked Questions
Common questions about HTML entity encoding and decoding.