5 Replies Latest reply: Feb 20, 2011 8:24 AM by Bernd Alheit RSS

    My pdfs are sluggish to view, please help

    jt77474 Community Member

      I have used a canon industrical photocopier (4080i) to create some large A3 scans of black and white bitmaps at 600dpi. The canon emails me a pdf which is fast to open and view, and a flick of the mouse wheel produces a responsive flick of pages through the document.

       

      All good so far.

       

      Now maybe I want to edit the pdf. So I export each page, say to tif, then I manipulate those pages in photoshop with a batch action, perhaps cropping out a central portion. When I come to recreate a pdf from those images, the final result is ALWAYS much more sluggish to view than the original from the photocopier.

       

      I have tried different formats, eg tif, png, but no matter what I do, even when the images are smaller, the pdf created from multiple combined images is always so much slower to use than the original pdf from the photocopier.

       

      What's going on here? What does my photocopier know about pdf generation that my acrobat pro doesn't? I'vetried to look in the file properties to find out about the image types, but the metadata shows absolutely no information. Totally useless.

       

      Please tell me how to create fast, responsive pdfs from combined images. I know it's possible because the photocopier can do it no problem. But acrobat can't. Please help