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# Pixel Formats

Supported image pixel formats.

## Topics

### Constants

[`QCPlugInPixelFormatARGB8`](/documentation/Quartz/QCPlugInPixelFormatARGB8)

An ARGB8 format. The alpha component is stored in the most significant bits of each pixel. Each pixel component is 8 bits. For best performance, use this format on PowerPC-based Macintosh computers, as it represents of the order of the data in memory.

[`QCPlugInPixelFormatBGRA8`](/documentation/Quartz/QCPlugInPixelFormatBGRA8)

A  BGRA8 format. The alpha component is stored in the least significant bits of each pixel. Each pixel component is 8 bits. For best performance, use this format on Intel-PC-based Macintosh computers, as it represents of the order of the data in memory.

[`QCPlugInPixelFormatRGBAf`](/documentation/Quartz/QCPlugInPixelFormatRGBAf)

An RGBAf format. Pixel components are represented as floating-point values.

[`QCPlugInPixelFormatI8`](/documentation/Quartz/QCPlugInPixelFormatI8)

An I8 format. Intensity information is represented as an 8-bit value.

[`QCPlugInPixelFormatIf`](/documentation/Quartz/QCPlugInPixelFormatIf)

An If format. Intensity information is represented as a floating-point value.


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