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HTML Code Generator

Generate a <pre><code> code block with language class for syntax highlighting libraries — configure content, language, and attributes — and copy the HTML.

Last updated: May 21, 2026

Client-Side Processing
Input Data Stays on Device
Instant Local Execution
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What is HTML Code Generator?

The combination of `<pre>` and `<code>` is the standard HTML pattern for displaying multi-line code blocks. `<pre>` preserves whitespace and line breaks; `<code>` provides the semantic "this is code" meaning. Syntax highlighting libraries like Prism.js and Highlight.js look for a `class="language-javascript"` (or similar) on the `<code>` element to determine which language to highlight.

For inline code within a sentence (not a block), use just `<code>` without `<pre>`. The HTML Code Tag Generator tool covers that case.

How to Use HTML Code Generator

1

Paste or type your code in the content area

2

Choose a language for the class="language-*" attribute

3

Optionally toggle off "Wrap in <pre>" for inline-only output

4

Add id or class to the <pre> element if needed

5

Copy the generated HTML

Common Use Cases

  • Tutorial authors embedding syntax-highlighted code examples in blog posts.
  • Developers generating code snippet markup for documentation pages.
  • Teams building component libraries with pre-styled code blocks.

Example Input and Output

A JavaScript code block ready for Prism.js highlighting.

Configuration
Language: javascript
Code: console.log("Hello, World!");
HTML output
<pre><code class="language-javascript">console.log("Hello, World!");</code></pre>

Privacy

All HTML generation runs in your browser. No data is sent to any server.

Frequently Asked Questions

Do I need to include Prism.js or Highlight.js myself?

Yes. This tool generates the correct class="language-*" markup that these libraries expect, but you must include the library stylesheet and script on your page separately. The generated HTML alone will not add colours.

Should I HTML-encode characters like < and > in the code?

Yes, in production you should escape < as &lt; and > as &gt; inside <code> blocks so the browser does not misinterpret them as HTML tags. This tool includes content as-is for clarity; add escaping when building server-rendered templates.

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