> ## Documentation Index
> Fetch the complete documentation index at: https://docs.abbyy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# BwPictureFormatsEnum

> BwPictureFormatsEnum in the ABBYY FineReader Engine API — Image formats and compression algorithms used when saving black-and-white images.

BwPictureFormatsEnum enumeration constants define the image formats or compression algorithms to be used when saving black-and-white images.

```
typedef enum {
 BWPF_CCITT4 = 0x00000001,
 BWPF_JBIG2 = 0x00000002,
 BWPF_JBIG2Lossless = 0x00000004,
 BWPF_Auto  = 0x00000008
} BwPictureFormatsEnum;
```

## Elements

| Name | Description |
| - | - |
| BWPF\\\_Auto | The format is defined automatically. |
| BWPF\\\_CCITT4 | CCITT4 compression algorithm. |
| BWPF\\\_JBIG2 | JBIG2 compression algorithm in lossy mode. |
| BWPF\\\_JBIG2Lossless | JBIG2 compression algorithm in lossless mode. |

## Used in

[IPDFPictureCompressionParams::BwPictureFormats](/fine-reader/engine/api-reference/parameter-objects/export-parameters/pdfpicturecompressionparams#bwpictureformats)