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HTML Encoder/Decoder
Encode and decode HTML entities and special characters to prevent XSS attacks and ensure proper HTML rendering
htmlencoderdecoderentitiesxsssecuritywebdevelopment
HTML Encoder/Decoder
Encode and decode HTML entities and special characters to prevent XSS attacks and ensure proper HTML rendering
Text to Encode
Encoded HTML
🏷️ About HTML Encoding
Common HTML Entities
Less than (<)
<Greater than (>)
>Ampersand (&)
&Quote (")
"Apostrophe (')
'Copyright (©)
©Security Benefits
• XSS Prevention: Prevents script injection
• Data Sanitization: Cleans user input
• Safe Rendering: Ensures proper HTML display
• Content Security: Protects against malicious code
Always encode user input before displaying in HTML
Key Features
• Complete HTML entity encoding and decoding
• Named entities (&, <, >, ", etc.)
• Numeric entities (', ", etc.)
• Hexadecimal entities (', ", etc.)
• Security-focused to prevent XSS attacks
• All processing happens locally in your browser
About HTML Encoder/Decoder
The HTML Encoder/Decoder tool helps web developers safely encode and decode HTML entities and special characters. Essential for preventing XSS attacks, ensuring proper HTML rendering, and handling user input securely in web applications.
✨ Key Benefits
- Prevent XSS (Cross-Site Scripting) attacks
- Ensure proper HTML rendering
- Handle user input securely
- Convert special characters to HTML entities
- Decode HTML entities back to readable text
- Support for all HTML entities
- Copy encoded/decoded text to clipboard
- Real-time encoding and decoding
- Works entirely in your browser
🚀 Features
- Complete HTML entity encoding and decoding
- Named entity support (&, <, >, etc.)
- Numeric entity support (', ", etc.)
- Hexadecimal entity support (', ", etc.)
- Special character handling
- Unicode character support
- Batch text processing
- Real-time conversion
- Copy to clipboard functionality
- Security-focused encoding
💡 Use Cases
- Preventing XSS attacks in web applications
- Displaying special characters in HTML
- Processing user input safely
- Converting between encoded and readable text
- Email template development
- XML and HTML document processing
- Web scraping and data cleaning
- Content management system development
🎯 Fun Facts
- HTML entities were introduced to display reserved characters in HTML
- The & symbol must be encoded as & in HTML
- There are 252 named HTML entities in HTML5
- The first HTML entity was < for the less-than symbol
- HTML entities help prevent XSS attacks in web applications
- Some entities like create non-breaking spaces
- Numeric entities can represent any Unicode character
- HTML entities are case-sensitive (except for hex entities)
📚 Historical Context
- HTML entities were introduced in HTML 2.0 in 1995
- The concept was borrowed from SGML (Standard Generalized Markup Language)
- HTML 3.2 (1997) expanded the entity set significantly
- HTML 4.0 (1997) introduced mathematical and special symbol entities
- XHTML 1.0 (2000) made entity usage more strict
- HTML5 (2014) standardized the current entity set
- Modern browsers support thousands of named entities