HTML Entity Encoder / Decoder

If you've ever tried to display a <script> tag as literal text on a webpage or struggled with special characters breaking your HTML, you already know why HTML encoding matters. Our HTML Entity Encoder/Decoder converts any text to safely embeddable HTML in seconds.

What are HTML Entities?

HTML entities are text codes that represent characters which have special meaning in HTML or that can't be directly typed. They start with & and end with ;.

The most critical ones to know:

Why HTML Encoding is Critical for Security

XSS (Cross-Site Scripting) is one of the most common web security vulnerabilities. It occurs when user-supplied data is rendered in a browser without encoding, allowing attackers to inject JavaScript:

<!-- Dangerous: user input rendered directly -->
<p>Welcome, <script>alert('Hacked!')</script></p>

<!-- Safe: user input HTML-encoded -->
<p>Welcome, &lt;script&gt;alert('Hacked!')&lt;/script&gt;</p>

Always encode user-provided data before displaying it in HTML. This is foundational web security.

How to Use the Tool

Encode (Text → HTML Entities):

1. Paste your raw text into the input box.
2. Click "Encode."
3. Copy the output — safe to embed in any HTML context.

Decode (HTML Entities → Text):

1. Paste your HTML entity string.
2. Click "Decode."
3. See the human-readable text.

Common Use Cases

• Displaying code snippets: Encode HTML/JSX examples before pasting them into blog posts so they render as text, not as actual HTML.
• Preventing XSS in web apps: Validate that your server-side encoding is working correctly.
• Writing HTML emails: Email clients are notoriously inconsistent — encoding special characters prevents rendering issues.
• CMS content management: Encoding specific characters prevents CMSes (like WordPress or Contentful) from misinterpreting stored content.
• Debugging: Decode garbled HTML entity strings in emails, RSS feeds, or API responses.

Frequently Asked Questions

Is there a difference between character references and entity names? Yes. < (named entity) and < (numeric character reference) both repre...