On Monday 25 November 2013 20:38:28 Albert Astals Cid wrote: > El Dilluns, 25 de novembre de 2013, a les 20:26:23, Ingo Klöcker va escriure: > > On Monday 25 November 2013 00:12:34 Albert Astals Cid wrote: > > > A PDF file is not a movie, it can't be read lineraly. > > > > Does the PDF format really prevent me from reading just the first 2 > > pages of a 100 pages document if I just download the first few KBs > > of > > the PDF file? I don't know the PDF format, so this question is > > serious. > > It [mostly] does. The XRef (table that references everything else on > the file) is at the end of the file. So we need that, of course in > protocols like CIFS we can just read the end of the file without > downloading it all. But that still leaves us with objects that > reference eachother all over and unless the file is specially crafted > (so called Linearized PDF) it'll mostly be "the whole file", so no > you don't need *always* the whole file, but you mostly do. > > > If the answer to the question is no, then it does make a lot of > > sense to load the file iteratively. For example, if I just want to > > have a quick look at the document (e.g. the abstract on the first > > page) to decide whether it's really the document I am looking for, > > then I surely don't want to wait for the entire document to be > > downloaded. > > Yes, that can be done, as it is my plan, but still will need to > download the whole file most of the times.
Thanks for the clarification, Albert. Regards, Ingo
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