---
title: "converter.thumbnailType Property  HTML5/Flash Uploader JavaScript"
canonical: https://www.aurigma.com/docs/us8/FH_P_J_$au_converter_thumbnailType.htm
product: "Upload Suite 8"
---

# converter.thumbnailType Property HTML5/Flash Uploader JavaScript

Supported technologies:
 
Gets or sets a value specifying the output image type.

## Syntax
 
```
$au.imageUploaderFlash({
    converters : [
        {
            //...other params...
            thumbnailType: "image/jpeg",
            //...other params...
        }
    ]
})
```

```
$au.imageUploaderFlash('uploaderID').converters().set(index).thumbnailType(value);
value = $au.imageUploaderFlash('uploaderID').converters().get(index).thumbnailType();
```
 
### Property Value
 
Type: **String**
 
A string specifying the output image format, one of the following values:
 
| Value | Description |
| --- | --- |
| **`image/jpeg`** | Always create a JPEG thumbnail. |
| **`image/png`** | Always create a PNG thumbnail. |
| **`original`** | Preserves the original image format if possible. If it is not possible (e.g. the input image is BMP or GIF), it will produce JPEG. |
| **`auto`** | The output format is selected based on the [thumbnailSizeLimit](https://www.aurigma.com/docs/us8/FH_P_J_$au_converter_thumbnailSizeLimit.htm.md) value - if PNG is small enough to fit in this limit, it will product PNG, otherwise it will create JPEG. |
 
Default value is **"image/jpeg"**.

## Remarks
 
This property makes sense only if the [mode](https://www.aurigma.com/docs/us8/FH_P_J_$au_converter_mode.htm.md) property has `Thumbnail` value.

## See Also
 
### Reference
 
- [thumbnailJpegQuality Property](https://www.aurigma.com/docs/us8/FH_P_J_$au_converter_thumbnailJpegQuality.htm.md)
- [thumbnailSizeLimit Property](https://www.aurigma.com/docs/us8/FH_P_J_$au_converter_thumbnailSizeLimit.htm.md)
- [Aurigma.ImageUploaderFlash.Converter.ThumbnailType ASP.NET Property HTML5/Flash Uploader](https://www.aurigma.com/docs/us8/FH_P_Aurigma_ImageUploaderFlash_Converter_ThumbnailType.htm.md)
- [Converter.ThumbnailType PHP Property HTML5/Flash Uploader](https://www.aurigma.com/docs/us8/FH_P_P_Converter_ThumbnailType.htm.md)

### Manual
 
- [Resizing and Recompressing via HTML5/Flash Uploader](https://www.aurigma.com/docs/us8/iuf-resizing-and-recompressing.htm.md)