Encode HTML entity

Encode HTML-sensitive characters as safe named or numeric references.

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ToolHTML Entity Encoder
Input
Output
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Preview

How it works

Characters that could become markup are replaced with references according to text or attribute context; existing entities can be preserved or encoded again by mode. Numeric references retain the same Unicode code point.

  • Common named references cover markup delimiters.
  • Numeric references handle characters without short names.

Worked example

Escape HTML for safe display
Encode angle brackets, ampersands, and quotes to prevent XSS and render code snippets safely
Input
											<script>alert("XSS & injection")</script>
Output
												&lt;script&gt;alert(&quot;XSS &amp; injection&quot;)&lt;/script&gt;

When to use this

Templates, code samples, and safe scraper storage encode HTML text.

Edge cases

  • Quotes need attribute-context escaping.
  • Encoding an existing &amp; twice creates visible entity text.
  • Emoji can remain UTF-8 or become numeric references.

References