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#1 Re: PDF Engine » Deflate compression of PDF » 2015-07-04 21:46:59
In addition to my last post, there is also a lossless jbig2 free implementation, with a much better compression than CCITT, used in rubypdf, in http://soft.rubypdf.com/software/lossle … mic-libary.
#2 Re: PDF Engine » Deflate compression of PDF » 2015-01-25 06:36:45
Hi. If someone is interested, ASyncPro (open source, http://sourceforge.net/projects/tpapro/) implements G3 compression (procedure acCompressRasterLine in AwFaxCvt.pas). As I understand it, G3 is a special case of G4 (CCITT 4), so it should work and should result in a good compression for pdfs with bitonal images, but unfortunately I was not able to use it to generate valid pdfs.
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