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HTML Encoding — Guide to HTML Entities

7 min read

2026-03-03

A guide to encoding and decoding HTML entities. XSS protection, special characters, and safe data output.

HTML Encoding — What It Is and Why It Matters

HTML encoding replaces special characters with HTML entities — text representations that the browser renders as the original characters.

Common HTML Entities

CharacterEntityNumeric Code
<&lt;&#60;
>&gt;&#62;
&&amp;&#38;
"&quot;&#34;
'&apos;&#39;

Why Encode HTML

1.

**Security**: protection against XSS attacks when outputting user data

2.

**Correctness**: < and > characters are not interpreted as tags

3.

**Special characters**: displaying characters not available on the keyboard

How to Use the Tool

1.

Paste text with HTML code into the input field

2.

Select the mode: encode or decode

3.

Get safe text with entities

4.

Copy the result for use in your code

Named and Numeric Entities

Named entities (like &) are more readable. Numeric entities (&) support any Unicode characters, even those without named equivalents.

See also: URL Encoding, Base64 Encoding, Unicode Lookup

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