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# JFIF Image Properties

Metadata keys for the JPEG File Interchange Format (JFIF).

## Topics

### Dictionary

[`kCGImagePropertyJFIFDictionary`](/documentation/ImageIO/kCGImagePropertyJFIFDictionary)

A dictionary of key-value pairs for an image that uses JPEG File Interchange Format (JFIF).

### Quality Information

[`kCGImagePropertyJFIFXDensity`](/documentation/ImageIO/kCGImagePropertyJFIFXDensity)

The x pixel density.

[`kCGImagePropertyJFIFYDensity`](/documentation/ImageIO/kCGImagePropertyJFIFYDensity)

The y pixel density.

[`kCGImagePropertyJFIFDensityUnit`](/documentation/ImageIO/kCGImagePropertyJFIFDensityUnit)

The units for the x and y density fields.

[`kCGImagePropertyJFIFIsProgressive`](/documentation/ImageIO/kCGImagePropertyJFIFIsProgressive)

Whether there are versions of the image of increasing quality.

### Version Information

[`kCGImagePropertyJFIFVersion`](/documentation/ImageIO/kCGImagePropertyJFIFVersion)

The version of JFIF.


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