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# ScanCompressionTypeEnum

<Note>
  This enum is implemented in FRE for Windows.
</Note>

ScanCompressionTypeEnum enumeration constants are used to specify modes of image compression after scanning. The compression type depends also on colority.

```
typedef enum {
 SCT_NoCompression,
 SCT_CcittGroup3,
 SCT_CcittGroup4,
 SCT_JpegJfif
}ScanCompressionTypeEnum;
```

## Elements

| Name                 | Description                                               |
| -------------------- | --------------------------------------------------------- |
| SCT\\\_NoCompression | The image is to be saved without any compression.         |
| SCT\\\_CcittGroup3   | Black-and-white TIFF compression with CCITT Group 3.      |
| SCT\\\_CcittGroup4   | Black-and-white TIFF compression with CCITT Group 4.      |
| SCT\\\_JpegJfif      | Gray or color TIFF compression with JPEG protocol (JFIF). |

## Used in

[IScanSourceSettings::CompressionType](/fine-reader/engine/api-reference/mechanism-objects/scansourcesettings#compressiontype)

[IScanSourceCapabilities::Compressions](/fine-reader/engine/api-reference/mechanism-objects/scansourcecapabilities#compressions)