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[`MarkdownPreviewRenderer`](MarkdownPreviewRenderer) › [`registerPostProcessor`](MarkdownPreviewRenderer/registerPostProcessor)
## MarkdownPreviewRenderer.registerPostProcessor() method
**Signature:**
```typescript
static registerPostProcessor(postProcessor: MarkdownPostProcessor, sortOrder?: number): void;
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| <code>postProcessor</code> | [`MarkdownPostProcessor`](MarkdownPostProcessor) | |
| <code>sortOrder</code> | <code>number</code> | _(Optional)_ |
**Returns:**
`void`