proportionalimage ProgressiveEncoding property
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Applies to
acProportionalImage as subproperty of JPEGProperties structure.  

Declaration
property ProgressiveEncoding: Boolean;  

Description
Determines whether an image can be progressively displayed when it is decompressed.  
 
Use ProgressiveEncoding to compress an image when writing out files, so that it can be progressively displayed when it is decompressed. Setting the ProgressiveDisplay property to True has no effect if ProgressiveEncoding was not set to True when the image was compressed.  

See also
CompressionQuality, Grayscale, Performance, PixelFormat, ProgressiveDisplay, Scale and Smoothing properties.