# FlattenerMonoCompression Enum

> Enumeration for setting the compression scheme for the Flattened Monochrome images.

- Product: Adobe PDF Library 21
- Language: .NET Framework
- Version: APDFL21.0.0PlusP1e
- HTML page: https://docs.datalogics.com/apdfl21/DotNetFramework/APDFL21.0.0PlusP1e/enum/FlattenerMonoCompression
- Version index: https://docs.datalogics.com/apdfl21/DotNetFramework/APDFL21.0.0PlusP1e/llms.txt

**Namespace:** `Datalogics::PDFL`

## Description

Enumeration for setting the compression scheme for the Flattened Monochrome images.

## Values

- `MonoCCITTGroup3Compression = 0`: Use CCITT Group 3 (fax) compression for flattened monochrome images.
- `MonoCCITTGroup4Compression = 1`: Use CCITT Group 4 compression for flattened monochrome images.
- `MonoZIPCompression = 2`: Use ZIP (Flate/Deflate) compression for flattened monochrome images.
- `MonoRunLengthCompression = 3`: Use Run Length Encoding compression for flattened monochrome images.