THotPDF.RecompressLoadedJPEGImages Method

Decodes eligible DCT images and adopts a new JPEG stream only when the minimum savings policy is met

Declaration

function RecompressLoadedJPEGImages(Quality: TJPEGQualityRange;
    EligibleColorSpaces: THPDFOptimizationColorSpaces;
    MinimumSavingsBytes: Int64;
    out AInfo: THPDFLoadedResourceOptimizationInfo): Integer;

Safety

Image masks and color-key masks are left unchanged while soft-mask references remain attached

Three-component ICCBased, CalGray and CalRGB inputs are color converted and written with an explicit calibrated RGB color space after rendering, while Lab, non-RGB ICCBased, Separation and DeviceN images are left unchanged

PreservedCalibratedImageCount, SkippedCalibratedImageCount and SkippedSpotColorImageCount expose these decisions in THPDFLoadedResourceOptimizationInfo

Resource and Image Optimization