HTML Entity Decoder
About HTML Encoder
The HTML Entity Encoder & Decoder escapes special characters (<, >, &, ", ') into safe HTML entities (<, >, &, ", ') to prevent Cross-Site Scripting (XSS) vulnerabilities and render raw code cleanly in web browsers.
How to Use HTML Encoder
Step 1
Choose "Encode to Entities" or "Decode Entities".
Step 2
Paste your raw HTML or entity-encoded text into the editor.
Step 3
Select entity format (Named, Decimal, or Hex).
Step 4
Click "Copy Output" to use in your web application.
Practical Use Cases for HTML Encoder
XSS Prevention & Code Sanitization
Sanitize user input before rendering in HTML templates to prevent Cross-Site Scripting (XSS) code injection attacks.
Blog & Documentation Code Snippet Display
Escape HTML tags so code examples display visually inside <pre> and <code> blocks without executing in the browser.
Input & Output Examples
Escaping HTML Tag to Entities
<script>alert("XSS Attack!");</script><script>alert("XSS Attack!");</script>
Key Features & Performance
- ✓Bi-directional HTML Entity Encoding and Decoding.
- ✓Supports Named Entities (&), Decimal Entities (&), and Hex Entities (&).
- ✓Escapes all critical HTML syntax characters (<, >, &, ", ', `, /).
- ✓Supports full ASCII and extended Unicode character sets.
- ✓100% Client-Side instant processing.
- ✓1-Click Copy sanitized HTML code.
Key Terminology & Definitions
HTML Entity
A piece of text ("string") that begins with an ampersand (&) and ends with a semicolon (;), used to display reserved characters in HTML.
Cross-Site Scripting (XSS)
A security vulnerability where malicious client-side scripts are injected into trusted websites due to unescaped user inputs.