---
title: alphaFirst
framework: appkit
role: symbol
role_heading: Type Property
path: appkit/nsbitmapimagerep/format/alphafirst
---

# alphaFirst

A format where the alpha value comes first.

## Declaration

```swift
static var alphaFirst: NSBitmapImageRep.Format { get }
```

## Discussion

Discussion If this option is not specified, alpha values are the last component specified, as in CMYKA and RGBA.

## See Also

### Constants

- [alphaNonpremultiplied](appkit/nsbitmapimagerep/format/alphanonpremultiplied.md)
- [floatingPointSamples](appkit/nsbitmapimagerep/format/floatingpointsamples.md)
- [sixteenBitBigEndian](appkit/nsbitmapimagerep/format/sixteenbitbigendian.md)
- [sixteenBitLittleEndian](appkit/nsbitmapimagerep/format/sixteenbitlittleendian.md)
- [thirtyTwoBitBigEndian](appkit/nsbitmapimagerep/format/thirtytwobitbigendian.md)
- [thirtyTwoBitLittleEndian](appkit/nsbitmapimagerep/format/thirtytwobitlittleendian.md)