---
title: "PixelFormatConverter..::.PaletteAlphaThresholdUsed Property "
canonical: https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Transforms_PixelFormatConverter_PaletteAlphaThresholdUsed.htm
product: "Graphics Mill 5.5 for .NET"
---

This documentation is for the old version. [Go to the latest Graphics Mill docs](https://www.graphicsmill.com/docs/gm/)

# PixelFormatConverter.PaletteAlphaThresholdUsed Property 
 
Gets/sets a value which specifies whether the alpha threshold should be used when building an adaptive palette.
 
**Namespace:** [Aurigma.GraphicsMill.Transforms](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_Transforms.htm.md)
 **Assembly:** Aurigma.GraphicsMill (in Aurigma.GraphicsMill.dll)
 
## Syntax
  
```
Public Property PaletteAlphaThresholdUsed As Boolean
```
 
```csharp
public bool PaletteAlphaThresholdUsed { get; set; }
```
 
### Property Value
Value which specifies whether to apply alpha channel threshold.
 
## Remarks
  
If the value of this property is **true**, and the value of the [BuildAdaptivePaletteWithAlpha](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Transforms_PixelFormatConverter_BuildAdaptivePaletteWithAlpha.htm.md) property is also **true**, then all alpha channel values will come to 0 or 255 depending on the [PaletteAlphaThreshold](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_Transforms_PixelFormatConverter_PaletteAlphaThreshold.htm.md) property value.
   
## See Also

### Reference

- [PixelFormatConverter Class](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_Transforms_PixelFormatConverter.htm.md)
- [Aurigma.GraphicsMill.Transforms Namespace](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_Transforms.htm.md)