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HTML Encoder/Decoder

HTML Encoder/Decoder

Encode special characters into HTML entities or decode HTML entities back to their original characters. Prevents XSS by safely encoding user-generated content for display in HTML.

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What is HTML Encoder/Decoder?

An HTML encoder/decoder converts special characters to their HTML entity equivalents and vice versa. Encoding characters like <, >, &, and quotes into entities like &lt; and &gt; is essential for safely displaying user-generated content in web pages and preventing Cross-Site Scripting (XSS) attacks. Our browser-based tool handles both encoding (text to entities) and decoding (entities to text), supporting named and numeric entity formats. All processing happens locally in your browser, ensuring your HTML content and code remain completely private.

How to Use HTML Encoder/Decoder

  1. Choose between 'Encode' mode (to convert text to HTML entities) or 'Decode' mode (to convert entities back to text).
  2. Paste your text or HTML entities into the input area.
  3. The output updates automatically with the encoded or decoded result.
  4. Copy the output for use in your HTML files, templates, or web application code.

Common Use Cases

  • Encoding user-generated content for safe display in HTML to prevent XSS vulnerabilities
  • Decoding HTML entities in scraped web content back to readable text
  • Preparing code snippets for display in blog posts and documentation by encoding HTML tags
  • Converting special characters in email templates and CMS content for proper rendering

Frequently Asked Questions

What are HTML entities?

HTML entities are special codes that represent characters which have special meaning in HTML. For example, '<' becomes '&lt;', '>' becomes '&gt;', and '&' becomes '&amp;'.

Why encode HTML?

Encoding prevents browsers from interpreting special characters as HTML markup. This is essential for displaying user-generated content safely and preventing Cross-Site Scripting (XSS) attacks.

What characters get encoded?

The essential characters are: & (&amp;), < (&lt;), > (&gt;), " (&quot;), and ' (&#39;). Extended encoding also covers non-ASCII characters.

Does it handle named entities?

Yes. The decoder handles both named entities (like &amp;, &lt;, &nbsp;) and numeric entities (like &#60;, &#x3C;).

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