Leonard Rosenthol wrote: > Only Subset(ted) fonts get a prefix - full embeds do not.
I was not aware of that full embeds do not need the randomized prefix, thank you for correction. > Merging subsets is difficult but not impossible - Acrobat does this when > you merge documents, for example. Yes, theoretically it is possible... I was thinking that Acrobat does something like re-subsetting & re-embedding of the font when the source font of the subsetted/embedded fonts is available on the system Acrobat is running on. Thank you for correction of my misunderstanding, again. Regards, mpsuzuki > And yes, we simply things in Acrobat/Reader for the average user. > > Leonard > > On 10/31/11 9:35 AM, "suzuki toshiya" <[email protected]> wrote: > >> The embedded fonts in PDF are expected to have the randomized prefix >> (please check PDF spec). If without randomized prefix, it is difficult >> to merge multiple PDFs with different subsets of same font (if a document >> using only the digits of Courier, and another document using only the >> Roman alphabets of Courier - to merge them, PDF interpreter should break >> 2 embedded fonts and merge 1 font? It's complex work!). >> Also using randomized prefix makes it easy to create per-page subsetted >> TrueType fonts. >> >> Adobe Reader "kindly" removes the randomized prefix and show unique >> family names only, maybe for the users who are unfamiliar with the design >> of PDF structure. >> >> Regards, >> mpsuzuki >> >> cobra.yu wrote: >>> Dears, >>> >>> When opening some PDF files with poppler_qt4viewer in qt4/demos, it >>> shows some font names in View->Fonts with strange "Prefix"es. >>> For example, viewing with Adobe Reader, the font name is >>> "DINPro-Regular", but poppler-qt4 shows "ELONDC+DINPro-Regular". >>> Sometimes, duplicate font names appear in the font list with >>> different strange prefixes, like "VUQIMU+DFLiHeiStd-W5", >>> "DDDFUE+DFLiHeiStd-W5", "KSKUOQ+DFLiHeiStd-W5" and so on. >>> What does this mean? Tks a lot. >>> >>> Cobra >>> _______________________________________________ >>> poppler mailing list >>> [email protected] >>> http://lists.freedesktop.org/mailman/listinfo/poppler >> _______________________________________________ >> poppler mailing list >> [email protected] >> http://lists.freedesktop.org/mailman/listinfo/poppler > _______________________________________________ poppler mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/poppler
