| ColorModes | Represents the psd file format color modes. |
| CompressionMethod | Defines the compression method used for image data. |
| LeadingMode | Photoshop leading mode (distance between lines) |
| PsdColorPalette | The PSD color palette. |
| PsdImage | Defines the PsdImage class that provides the ability to load, edit, save PSD files as well as update properties, add watermarks, perform graphics operations or convert one file format to another. |
| PsdVersion | File format version |
| ResourceBlock | The resource block. |
| ResourceBlock.ResourceBlockState | Represents resource block state. |
| SmartObjectProvider | Defines the smart object provider that provides getting / setting data sources from global link resources of the PSD file and their contents. |
