Quote:
Originally Posted by polly
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PDF is a horrible format for readers, especially if they are images instead of text. The format is designed to render a 8.5x11 page exactly as it was created. Those images aren't going to work well on any of the 6" readers out there. ...
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While its true that the average PDF book "found in the wild" is a horrible option for the average ereader device, it is totally false that it is universally a poor choice and that it the format is designed to render any particular page size. Any one PDF is specific for one display/print size, but that size and be any size within a rather wide range. The fact that most PDFs "in the wild" are generated with a letter sized page (either 8-1/2x11" or A4) results from the person generating the PDF either actively choosing that size on the assumption that the reader will print the file or failing to choose a size and accepting the default size chosen by the PDF generation program.
PDFs can work very well on small screens, though if an only if they are generated with the small screen in mind. When dealing with PDFs created from images of scanned book pages, they will display well on small ereaders if, and only if, the original book page is about the same size as the ereader screen. The reason so many of these scanned book PDFs render poorly on ereaders is that most printed books have a page size larger than the common ereader's screen.