HTML Encode Decode

HTML Encode Decode calculator can be used to convert special characters to HTML entities and vice versa, preventing HTML injection in web forms and emails.

Input Text

Output Result

Calculation Method

HTML Entities convert special characters to a format that can be safely displayed in HTML documents.

Encoding: Converts characters like < to &lt; to prevent HTML tag interpretation.
Decoding: Converts &lt; back to < to restore the original text.

HTML Encode Decode Calculator Usage Guide

Learn how to use the HTML Encode Decode calculator and its working principles

When to Use HTML Encoding

HTML encoding is essential when:

  • Inserting text from user input into HTML documents
  • Sharing text in email that might contain HTML tags
  • Creating data attributes that should not be interpreted as HTML
  • When you need to display text that contains special characters like < and >

When to Use HTML Decoding

HTML decoding is useful when:

  • Restoring encoded text back to its original form
  • Processing data received from APIs that returns encoded values
  • Displaying user-generated content that was previously encoded

Examples

Encoding Example: The text "Hello <World>!" becomes "Hello &lt;World&gt;!"

Decoding Example: The text "Hello &lt;World&gt;!" becomes "Hello <World>!"

Important Security Note

HTML encoding prevents Cross-Site Scripting (XSS) attacks by ensuring that special characters are displayed as text rather than being interpreted as HTML or JavaScript code.