public enum FlattenFlag
Feature reduce PDF while trying to preserve some complex PDF features (such as vector figures, transparency, shadings, blend modes, Type3 fonts etc.) for pages that are already fast to render. This option can also result in smaller & faster files compared to e_simple, but the pages may have more complex structure.
Preserve vector content where possible. In particular only feature reduce PDF files containing overprint or very complex vector content. Currently this option can only be used with XODOutputOptions.
Disable flattening and convert all content as is.
Feature reduce PDF to a simple two layer representation consisting of a single background RGB image and a simple top text layer.