What is the difference between HTML encoding and URL encoding?

HTML encoding converts special HTML characters into entities (e.g., < becomes <) for safe display in web pages. URL encoding (percent encoding) converts characters into %XX format (e.g., space becomes %20) for safe inclusion in URLs. They serve different purposes and use different formats.

Why is HTML encoding important for security?

HTML encoding prevents cross-site scripting (XSS) attacks by ensuring that user input is displayed as plain text rather than executed as HTML or JavaScript code. Without encoding, an attacker could inject tags that steal cookies, redirect users, or perform other malicious actions.

Which characters need to be HTML encoded?

The five essential characters are: & (ampersand), (greater than), " (double quote), and ' (apostrophe). These characters have special meaning in HTML, so they must be encoded when displayed as content rather than as markup.

Can I use this tool to encode HTML for email templates?

Yes. HTML encoding is especially important in email templates where certain characters might be misinterpreted by email clients. Encode any special characters in your text content to ensure consistent rendering across Gmail, Outlook, Apple Mail, and other clients.

What are numeric and hexadecimal HTML entities?

Numeric entities use the format &#NUMBER; (e.g., < for <) and hexadecimal entities use &#xHEX; (e.g., < for <). Both represent the Unicode code point of a character. This decoder handles all three formats: named entities (<), numeric (<), and hexadecimal (<).

HTML Encoder/Decoder — Encode HTML Entities Online

Encode and decode HTML entities. Convert special characters to HTML entities and back.

Character	Entity	Description
&	&	Ampersand
<	<	Less than
>	>	Greater than
"	"	Double quote
'	'	Single quote
(space)		Non-breaking space
©	©	Copyright
®	®	Registered

Free HTML Encoder/Decoder – Escape & Unescape HTML Entities Online

HTML encoding (also called HTML escaping) is the process of converting special characters into their corresponding HTML entities. For example, the less-than sign (<) becomes < and the ampersand (&) becomes &. This is essential for displaying code snippets on web pages and preventing cross-site scripting (XSS) attacks.

Our free HTML encoder and decoder tool handles both directions: encode raw HTML into safe entities for display, or decode HTML entities back into their original characters. This is a daily need for web developers, technical writers, and anyone working with HTML content.

When you embed user-generated content in a web page without encoding it, you open the door to XSS vulnerabilities. An attacker could inject malicious JavaScript through a comment field or form input. Encoding ensures that all special characters are displayed as text rather than interpreted as HTML or script code.

The tool handles all five critical HTML entities: & (ampersand), < (less than), > (greater than), " (double quote), and ' (single quote/apostrophe). It also decodes numeric character references (<) and hexadecimal references (<), covering all standard HTML entity formats.

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Common HTML Entities

Free HTML Encoder/Decoder – Escape & Unescape HTML Entities Online

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