Hi!
JPEG images are stored as they are. Bilevel images (monochrome) will be compressed using FAX encoding (CCITT) and/or LZW encoding. Other images use LZW encoding (called FlateDecode in PDF).
PDFsharp does not analyse your pictures. If you store bilevel images in a 24 bit format, LZW encoding will be used. If you convert them to a 1 bit format, CCITT encoding will be used if that creates the smallest possible file (but LZW is better for certain bilevel files).
_________________ Regards Thomas Hoevel PDFsharp Team
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