HTML Entity Encoder & Decoder
Encode special characters into HTML entities or decode HTML entities back into readable text using a fast browser-based utility.
How to Use the HTML Entity Tool
Encode or decode HTML character entities safely in four simple steps:
Choose Encode or Decode
Select "Encode Entities" to escape special characters, or "Decode Entities" to convert entity codes back into normal text.
Paste Markup or Text
Paste your HTML tags, code snippets, or encoded entity strings into the left editor pane or test with "Sample".
Configure Output Style
When encoding, choose between Named entities (&), Decimal (&), or Hexadecimal (&) formatting.
Copy or Download
Copy your converted entities with one click or export them as a clean text file named html-entities.txt.
What is an HTML Entity Encoder & Decoder?
An HTML Entity Encoder & Decoder is a developer utility that converts reserved HTML markup characters into their corresponding HTML entity references (escaping), or reverses that process to restore entity references back to standard readable characters (unescaping).
In the HTML specification, certain characters have predefined grammatical roles: the less-than symbol (<) opens HTML tags, the greater-than symbol (>) closes tags, double quotes (") encapsulate attribute values, and the ampersand (&) introduces entity sequences. When raw text containing these characters is inserted directly into web pages, browsers may mistake user text for real HTML tags, leading to layout deformation or severe Cross-Site Scripting (XSS) vulnerabilities.
By replacing < with <, > with >, and & with &, the browser reliably renders characters as visible text without parsing them as executable DOM instructions.
HTML Entity Conversion Examples
Explore how raw markup is safely encoded into entities and decoded back to plain text:
<div class="test">Tom & Jerry</div>
Encodes to:
<div class="test">Tom & Jerry</div><strong>Hello & Welcome</strong>
Decodes to:
<strong>Hello & Welcome</strong>When Developers Use HTML Entity Conversion
Essential scenarios where entity encoding is critical in modern software engineering:
XSS Attack Mitigation
Sanitizing untrusted user submissions, forum posts, and comments before outputting them into HTML templates and web views.
Displaying Code Snippets
Rendering literal HTML, XML, or JSX markup inside documentation blocks (<pre><code>) without browser interpretation.
Email & RSS Feed Templates
Escaping special symbols in transactional email templates and XML-based RSS feeds to prevent parser crashes on unescaped ampersands.
Legacy Character Sets
Representing copyright symbols (©), currency symbols, and mathematical glyphs safely across non-UTF-8 encoding pipelines.
Key Features of CodeCrate HTML Entity Tool
Engineered with strict security standards and versatile formatting controls:
Zero-Execution Text Rendering
Decoded strings are displayed strictly as plain text in an isolated textarea. Script tags and event handlers are never executed.
Multiple Output Formats
Easily switch between Named entities (e.g., &), Decimal numeric (&), and Hexadecimal numeric (&) formats.
Comprehensive Entity Support
Decodes all standard HTML5 named entities, decimal codes ({), and hex codes (😀) seamlessly.
One-Click Copy & Download
Copy your converted text to clipboard immediately or export the entire output as html-entities.txt.
Important Technical Notes
Decoded content is treated as untrusted text at all times. The output is populated strictly via native textContent and form textarea value assignments, guaranteeing that malicious payloads like <script>, <iframe>, or <img onerror=...> cannot execute inside your browser session.
In strict XML and XHTML, only five named entity references are officially recognized without an external DTD: & (&), < (<), > (>), " ("), and ' ('). For maximum compatibility with both HTML and XML parsers, decimal or hex references are recommended for other symbols.
Frequently Asked Questions
Got questions about HTML entity encoding and decoding? Find answers below:
What are HTML entities?
HTML entities are coded character sequences used in HTML documents to represent reserved syntax characters (such as '<', '>', '&', '\"') and symbols that cannot be directly typed on standard keyboards.
Why is HTML entity encoding critical for web security (XSS prevention)?
Unescaped user input placed inside HTML pages can lead to Cross-Site Scripting (XSS) attacks. By converting '<' into '<' and '&' into '&', the browser treats user input strictly as text rather than executable markup or script tags.
What is the difference between named, decimal, and hexadecimal entities?
Named entities use human-friendly mnemonic names like '&' or '©'. Decimal entities refer to the character's Unicode code point in base 10 (e.g., '&'), while hexadecimal entities use base 16 (e.g., '&'). All are valid HTML5.
Is decoded HTML safely displayed without executing scripts?
Yes. Decoded HTML is rendered strictly as plain text inside an isolated read-only textarea via text-safe interfaces. User-supplied script tags, svg payloads, and event handlers are never executed in the DOM.
Does this tool run locally in my browser?
Yes. All conversion executes 100% locally in your browser memory. Your HTML snippets, source code, and text data are never sent to external servers.
Can I download the converted entities file?
Yes. You can copy the result directly to your clipboard or download it as html-entities.txt with a single click.
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