Convert special characters to HTML numeric/named entities and back instantly. Escape reserved characters like <, >, &, and " to safely embed user input or render code snippets on the web.

How to Use This HTML Entity Encoder / Decoder

This utility provides quick, real-time conversion between standard plain text strings, raw HTML markup, and safe HTML character entities. Whether you are preparing raw HTML snippets for display inside code blocks or sanitizing application input to prevent cross-site scripting (XSS), this tool handles character escaping completely inside your browser.

To encode HTML special chars:

Select Encode Mode at the top of the card interface.
Choose your target entity format: Named entities (e.g., <), Decimal numeric entities (e.g., <), or Hexadecimal entities (e.g., <).
Choose your conversion scope: limit escaping to critical special characters (<, >, &, ", ', /), extend to non-ASCII symbols, or escape every character in the string.
Type or paste your input string into the top box. The converted entity output appears instantly in the lower text area.

To decode HTML entities back to plain text:

Switch to Decode Mode.
Paste any block of HTML entity encoded code (supporting both named formats like & and numeric references like &).
Click Copy Result to quickly transfer your decoded code back into your text editor or IDE.

Understanding HTML Entities, XSS Prevention, and Character Escaping

In web development, HTML uses reserve characters to define elements, tags, and document markup syntax. Characters like the less-than symbol (<) and greater-than symbol (>) designate HTML tags, while the ampersand (&) signals entity reference starts. When developers need to display these characters as literal body content without causing browser parsing errors or security vulnerabilities, an html character escaper is required.

An HTML entity is a structured character sequence that begins with an ampersand (&) and concludes with a semicolon (;). Browsers render these sequences as their corresponding visible characters. There are three primary formats used when you convert html symbols:

Named Entities: Human-readable aliases mapped to common symbols, such as " for double quotes, © for copyright symbols, and   for non-breaking spaces.
Decimal Entities: Numeric representations based on standard Unicode code points, written as " for double quotes or < for <.
Hexadecimal Entities: Hexadecimal Unicode notations, formatted as " or <.

Using an online html entity encoder decoder plays a vital role in web security and content delivery. Rendering unsanitized user inputs directly into web pages creates vulnerabilities to Cross-Site Scripting (XSS) attacks, allowing malicious scripts to execute within users' browsers. Converting special characters into their entity equivalents neutralizes potentially harmful script injection tags like <script> while ensuring the user interface displays the exact characters intended.