---
layout: default
title: XML Rendering
description: Rendering Markdown documents in XML
---

# XML Rendering

Version 2.0 introduced the ability to render Markdown `Document` objects in XML. This is particularly useful for debugging [custom extensions](/2.2/customization/overview/) as you can see the XML representation of the [Abstract Syntax Tree](/2.2/customization/abstract-syntax-tree/).

To convert Markdown to XML, you would instantiate a `MarkdownToXmlConverter` with an [`Environment`](/2.2/customization/environment/) and then call `convert()` on any Markdown.

```php
use League\CommonMark\Environment\Environment;
use League\CommonMark\Extension\CommonMark\CommonMarkCoreExtension;
use League\CommonMark\Xml\MarkdownToXmlConverter;

$environment = new Environment();
$environment->addExtension(new CommonMarkCoreExtension());

$converter = new MarkdownToXmlConverter($environment);

echo $converter->convert('# **Hello** World!');
```

This will display XML output like this:

```xml
<?xml version="1.0" encoding="UTF-8"?>
<document xmlns="http://commonmark.org/xml/1.0">
    <heading level="1">
        <strong>
            <text>Hello</text>
        </strong>
        <text> World!</text>
    </heading>
</document>
```

Alternatively, if you already have a `Document` object you want to visualize in XML, you can use the`XmlRenderer` class to convert it to XML.

## Return Value

Like with `CommonMarkConverter::convert()`, the `renderDocument()` actually returns an instance of `League\CommonMark\Output\RenderedContentInterface`.  You can cast this (implicitly, as shown above, or explicitly) to a `string` or call `getContent()` to get the final XML output.

## Customizing the XML Output

See the [rendering documentation](/2.2/customization/rendering/#xml-rendering) for information on customizing the XML output.
