HTML Encoder Decoder Online

About HTML Encoder & Decoder

This free online HTML encoder and decoder tool helps you safely encode HTML content for display or decode HTML entities back to readable text. All processing happens in your browser for maximum privacy and security.

Features

• HTML Encoding: Convert HTML tags and special characters to safe entities
• HTML Decoding: Convert HTML entities back to readable characters
• Smart Entity Handling: Preserves existing entities during encoding
• File Support: Upload HTML files for batch processing
• Input Validation: Real-time validation of HTML content and entities
• Auto-validation: Automatically validate input as you type
• Copy & Download: Copy results to clipboard or save as files
• Privacy First: All processing happens locally in your browser

HTML Entities

HTML entities are special codes used to display reserved characters in HTML. Common entities include:

• &lt; represents < (less than)
• &gt; represents > (greater than)
• &amp; represents & (ampersand)
• &quot; represents " (quotation mark)
• &#39; represents ' (apostrophe)

Use Cases

• Code Display: Show HTML code safely on web pages without execution
• Content Security: Prevent XSS attacks by encoding user input
• Data Processing: Clean and prepare HTML content for databases
• Email Templates: Encode HTML for safe email transmission
• Documentation: Display HTML examples in tutorials and guides
• Form Handling: Process form data containing HTML characters

When to Use Each Mode

• Encoding: When you need to display HTML code as text without rendering it
• Decoding: When you need to convert HTML entities back to readable characters
• Text Mode: For direct input and quick conversions
• File Mode: For processing entire HTML files or large content blocks