> ## Documentation Index
> Fetch the complete documentation index at: https://bun-1dd33a4e-farm-ad2450b3-transpiler-cache-version-namespa.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Escape an HTML string

`Bun.escapeHTML()` escapes HTML characters in a string. It makes the following replacements.

* `"` becomes `"""`
* `&` becomes `"&"`
* `'` becomes `"'"`
* `<` becomes `"&lt;"`
* `>` becomes `"&gt;"`

This function is optimized for large input. Non-string values are converted to a string before escaping.

```ts theme={"theme":{"light":"github-light","dark":"dracula"}}
Bun.escapeHTML("<script>alert('Hello World!')</script>");
// &lt;script&gt;alert(&#x27;Hello World!&#x27;)&lt;&#x2F;script&gt;
```

***

See [Utils](/runtime/utils).