Advertisement

HTML Entity Encoder

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

Common HTML Entities Reference

Enter text to encode or decode

Supports named entities (&), decimal (&), and hex (&) formats

Advertisement

Related Tools

HTML EntitiesNEW

Encode special characters to HTML entities or decode them back to text.

URL EncodeNEW

Encode or decode URLs and URI components. Handle special characters safely.

String EncodeNEW

Encode and decode strings in multiple formats including Base64, URL, HTML entities, and Unicode.

Base64NEW

Encode text to Base64 or decode Base64 to text instantly. Supports UTF-8.

Advertisement

Frequently Asked Questions

What are HTML entities?
HTML entities are special character sequences that represent characters which have special meaning in HTML or cannot be easily typed. They begin with an ampersand (&) and end with a semicolon (;). For example, &lt; represents the less-than sign (<), &amp; represents an ampersand (&), and &nbsp; represents a non-breaking space.
Why do I need to encode HTML entities?
Encoding is necessary when you want to display characters that HTML would otherwise interpret as markup. For example, if you want to show <div> as text on a webpage rather than having the browser treat it as an HTML tag, you need to encode the angle brackets as &lt;div&gt;. This prevents XSS (cross-site scripting) attacks and ensures correct content display.
What is the difference between named and numeric entities?
Named entities use human-readable names like &amp; for ampersand and &lt; for less-than. Numeric entities use the Unicode code point in decimal (&#38;) or hexadecimal (&#x26;) format. Named entities are easier to read in source code, while numeric entities can represent any Unicode character.
Does this tool support all HTML entities?
The tool supports all common named HTML entities including those for special characters, mathematical symbols, Greek letters, and typographic marks. It also supports numeric encoding for any Unicode character, covering the entire Unicode standard.
Can I decode entities back to text?
Yes. The tool is fully bidirectional. Switch to decode mode to convert HTML entities (both named and numeric) back to their original characters. This is useful for reading encoded HTML source code or extracting plain text from HTML content.
Is this tool safe for preventing XSS attacks?
Encoding user input with HTML entities is one layer of XSS prevention, but it should not be your only defense. A comprehensive security strategy includes Content Security Policy (CSP) headers, input validation, output encoding appropriate to the context (HTML, JavaScript, URL, CSS), and using security-focused frameworks that handle encoding automatically.

How to Use the HTML Entity Encoder

HTML entity encoding is essential for web developers who need to safely display special characters in HTML content. Our free online tool encodes text to HTML entities and decodes HTML entities back to plain text, supporting both named entities and numeric character references.

Step 1: Choose direction. Select whether you want to encode (text to HTML entities) or decode (HTML entities to text). The tool supports bidirectional conversion for complete flexibility.

Step 2: Enter your text. Paste or type the text you want to convert. For encoding, enter plain text with special characters. For decoding, paste HTML-encoded text containing entity references.

Step 3: Copy the result. The converted output appears instantly. Click the copy button to copy it to your clipboard for use in your HTML documents, templates, or code.

Understanding HTML Entities

HTML entities solve a fundamental problem in web development: how to display characters that have special meaning in HTML syntax. The five characters that must always be encoded in HTML content are the less-than sign (<), greater-than sign (>), ampersand (&), double quote ("), and single quote/apostrophe ('). These characters are part of HTML syntax, so displaying them as text requires entity encoding.

Beyond the five essential characters, HTML entities provide a way to include characters that may not be available on all keyboards or in all character encodings. Currency symbols, mathematical operators, Greek letters, arrows, and decorative symbols all have named HTML entities. For example, © produces the copyright symbol, € produces the Euro sign, and ™ produces the trademark symbol.

Numeric character references provide an alternative to named entities and can represent any Unicode character. Decimal references use the format &#nnnn; where nnnn is the Unicode code point in decimal. Hexadecimal references use &#xhhhh; format. For example, the copyright symbol can be written as &#169; (decimal) or &#xA9; (hexadecimal).

HTML Entity Use Cases

XSS prevention. The most critical use of HTML entity encoding is preventing cross-site scripting (XSS) attacks. When displaying user-generated content on a webpage, encoding special characters ensures that injected HTML or JavaScript is rendered as harmless text rather than executed as code.

Code documentation. When writing tutorials, documentation, or blog posts about HTML, you need to show HTML code as text. Entity encoding allows you to display HTML tags as readable text within your HTML documents.

Email templates. HTML email clients have varying levels of Unicode support. Using HTML entities for special characters ensures consistent rendering across different email clients and platforms, improving the reliability of email communications.

Legacy system compatibility. Some older systems and databases do not support Unicode properly. HTML entity encoding allows you to represent international characters and symbols in ASCII-safe format that works with legacy encodings.

Why Use Our HTML Entity Encoder?

Bidirectional conversion. Encode text to HTML entities or decode HTML entities back to text with a single tool. No need to switch between different websites or tools for encoding and decoding operations.

Named and numeric support. The tool handles both named entities (like &amp;) and numeric character references (like &#38;), giving you full coverage of HTML entity encoding standards.

Instant results. Conversion happens in real time as you type. No button to click, no delay. The tool is designed for rapid, iterative use during development workflows.

Complete privacy. All encoding and decoding happens in your browser. Your text is never sent to any server, making the tool safe for encoding sensitive content.

Advertisement