THPDFImageCompressionType

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Determines image compression algorithms.

 

type

   THPDFImageCompressionType = (icFlate, icJpeg, icCCITT31, icCCITT32, icCCITT42, icJBIG2, icAutoMono);

 

Value                Meaning


icFlate                Flate compression algorithm

icJpeg                JPEG compression algorithm

icCCITT31                CCITT Group 3 one-dimensional compression

icCCITT32                CCITT Group 3 two-dimensional compression

icCCITT42                CCITT Group 4 compression

icJBIG2                JBIG2 compression for 1-bit image data in PDF 1.4 or later

icAutoMono               Automatic monochrome selector for 1-bit bitmap content. HotPDF chooses Flate for small images, CCITT Group 4 for medium images or PDF/A constrained output, and JBIG2 for large eligible images