HTML Encoder/Decoder

Encode and decode HTML entities. Convert special characters to HTML entities and vice versa.

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Benefits of Using HTML Encoder

Security

Encode HTML to prevent XSS attacks and safely display user-generated content.

Character Display

Display special characters and symbols correctly in HTML without breaking the code.

Bidirectional

Encode HTML entities and decode them back to readable text seamlessly.

Privacy First

All encoding and decoding happens locally in your browser. Your data never leaves your device.

Key Features

Encode HTML entities

Decode HTML entities

Support for common HTML entities

Support for numeric entities (decimal and hexadecimal)

Prevent XSS attacks

Safe character display

Copy to clipboard functionality

Works entirely offline

Free to use with no limitations

How to Use

Enter HTML Text

Type or paste the HTML text you want to encode or decode into the input field.

Choose Action

Click "Encode" to convert special characters to HTML entities, or "Decode" to convert HTML entities back to readable text.

Get Result

Your encoded or decoded text will appear in the output field. You can copy it to clipboard with one click.

Understanding HTML Encoding and Decoding

HTML encoding is the process of converting special characters and symbols into HTML entities that can be safely displayed in web browsers. HTML entities are character sequences that begin with an ampersand (&) and end with a semicolon (;), representing special characters that have meaning in HTML.

Our free HTML encoder/decoder tool helps developers encode and decode HTML entities instantly. Whether you're sanitizing user input, displaying special characters safely, or debugging HTML issues, proper encoding and decoding is essential for web development.

Why HTML Encoding Matters

Security: Encoding prevents XSS (Cross-Site Scripting) attacks by converting potentially dangerous characters into safe HTML entities.
Character Display: HTML entities allow you to display special characters that might otherwise be interpreted as HTML code.
Compatibility: Ensures text displays correctly across different browsers and character encodings.
Data Integrity: Prevents data corruption when storing or transmitting HTML content.

Common HTML Entities

< - Less than sign (<)
> - Greater than sign (>)
& - Ampersand (&)
" - Double quotation mark (")
' - Single quotation mark (')
- Non-breaking space
® - Registered trademark symbol (®)

Common Use Cases

Sanitizing user input in web forms
Displaying special characters in HTML content
Preventing XSS attacks
Converting HTML entities back to readable text
Debugging HTML rendering issues
Preparing content for email templates

Our tool processes all HTML encoding and decoding locally in your browser, ensuring complete privacy and security. No data is sent to any server, making it safe for sensitive content.

Code Examples

JavaScript - Encode HTML

// Encode HTML entities
function encodeHTML(text) {
  const entities = {
    '&': '&amp;',
    '<': '&lt;',
    '>': '&gt;',
    '"': '&quot;',
    "'": '&apos;'
  };
  
  return text.replace(/[&<>"']/g, char => entities[char]);
}

// Usage
const text = '<div>Hello & "World"</div>';
const encoded = encodeHTML(text);
console.log(encoded); // "&lt;div&gt;Hello &amp; &quot;World&quot;&lt;/div&gt;"

JavaScript - Decode HTML

// Decode HTML entities
function decodeHTML(text) {
  const entities = {
    '&amp;': '&',
    '&lt;': '<',
    '&gt;': '>',
    '&quot;': '"',
    '&apos;': "'"
  };
  
  return text.replace(/&amp;|&lt;|&gt;|&quot;|&apos;/g, entity => entities[entity]);
}

// Usage
const encoded = '&lt;div&gt;Hello &amp; &quot;World&quot;&lt;/div&gt;';
const decoded = decodeHTML(encoded);
console.log(decoded); // "<div>Hello & "World"</div>"

PHP - HTML Entities

<?php
// Encode HTML entities
$text = '<div>Hello & "World"</div>';
$encoded = htmlspecialchars($text, ENT_QUOTES, 'UTF-8');
echo $encoded; // "&lt;div&gt;Hello &amp; &quot;World&quot;&lt;/div&gt;"

// Decode HTML entities
$decoded = html_entity_decode($encoded, ENT_QUOTES, 'UTF-8');
echo $decoded; // "<div>Hello & "World"</div>"

// Alternative: htmlentities() and html_entity_decode()
$encoded2 = htmlentities($text, ENT_QUOTES, 'UTF-8');
$decoded2 = html_entity_decode($encoded2, ENT_QUOTES, 'UTF-8');
?>

HTML Encoder/Decoder