There's a thumbnail stored, usually image alternates are there to speed up display. Displaying the image doesn't generally entail decompressing the image in the PDF viewer. But you do have to load the entire page if it is optimized for web. Otherwise you have to download the complete PDF. Which is almost counter-PDF. The whole idea being that any PDF viewer on any platform can view the contents and that each page is a self-contained document that doesn't need resources from other pages to be rendered. Matt Beals Consultant Enfocus Certified Trainer, Markzware Recognized Trainer (206) 618-2537 - cell (720) 367-3869 - fax mailto:matt@xxxxxxxxxxxxx Come visit me at: http://www.mattbeals.com http://www.actionlistexchange.net http://www.mattbeals.com/blog/ Friends don't let friends write HTML emails > From: Paul Smith <phhs80@xxxxxxxxx> > Reply-To: "For users of Fedora Core releases <fedora-list@xxxxxxxxxx>" > <fedora-list@xxxxxxxxxx> > Date: Sun, 13 Aug 2006 13:02:50 +0100 > To: For users of Fedora Core releases <fedora-list@xxxxxxxxxx> > Subject: Re: tiff2pdf looses information? > > On 8/13/06, Matt Beals <matt@xxxxxxxxxxxxx> wrote: >> A PDF can most certainly use image compression. Most often it uses medium >> quality JPEG. Depending on how the conversion occurs it can also down sample >> the image resolution to 150 dpi. There are several different compression >> methods that could be used: None, LZW, 4bit ZIP, 8bit ZIP, JPEG, JPEG2000, >> JBIG, CCITTG4, CCITTG3. All depends on how the software is configured. > > Thanks, Matt. I was thinking about something like an embodied (in pdf > viewers) unzip program. When viewing a pdf document with an image, the > image would be decompressed before putting it on the screen. > > Paul > > -- > fedora-list mailing list > fedora-list@xxxxxxxxxx > To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
