> For the complete documentation index, see [llms.txt](https://brixxbox.gitbook.io/brixxbox-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://brixxbox.gitbook.io/brixxbox-documentation/client-api-reference/functions/showblob.md).

# showBlob

Shows a blob document in a docViewer control.

### Parameters

1. controlId - The id of a "docViewer" control
2. blobData - The blob data.

### Example Usages

```javascript
   let myBlob = brixxApi.getAttachmentByFileName("Invoice1.pdf");
   brixxApi.showBlob("myDocViewer", myBlob);
```