# PDFlattenerMonochromeCompSet Enum

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

- Product: Adobe PDF Library 21
- Language: Java
- Version: APDFL21.0.0PlusP1f
- HTML page: https://docs.datalogics.com/apdfl21/Java/APDFL21.0.0PlusP1f/enum/PDFlattenerMonochromeCompSet
- Version index: https://docs.datalogics.com/apdfl21/Java/APDFL21.0.0PlusP1f/llms.txt

**Namespace:** `com::datalogics::PDFL`

## Description

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

## Values

- `KPDFLATTENER_MONO_CCITTGROUP_3COMPRESSION`: CCITT Group 3 (fax) compression for flattened monochrome images.
- `KPDFLATTENER_MONO_CCITTGROUP_4COMPRESSION`: CCITT Group 4 (fax) compression for flattened monochrome images.
- `KPDFLATTENER_MONO_RUN_LENGTH_COMPRESSION`: Run-length encoding compression for flattened monochrome images.
- `KPDFLATTENER_MONO_ZIP_COMPRESSION`: ZIP (Flate) compression for flattened monochrome images.