Dark PDFs

Discussion in 'iPad' started by Webnasty, Apr 5, 2010.

  1. Webnasty macrumors member

    Sep 8, 2008
    Does anybody know why PDFs look so dark on the iPad? I have tried both GoodReader and emailing them, and they look way darker than the originals. Plus the colors are distorted. Can this be fixed?
  2. Cander macrumors 6502

    Jun 3, 2008
    Did you have Night mode on for Good Reader?
  3. Webnasty thread starter macrumors member

    Sep 8, 2008
    Nope. The photos in my pdfs looks great on my macbook pro, look great when printed, but on the iPad are dark.
  4. w00tini macrumors 6502a

    Feb 28, 2008
    I have the same issues. I downloaded AirSharing HD and they look fine. Good reader is kinda wonky.
  5. Webnasty thread starter macrumors member

    Sep 8, 2008
    Thanks, I'll give that a shot.
  6. Webnasty thread starter macrumors member

    Sep 8, 2008
    That was a quick waste of $10. I emailed myself a pdf. It had a button to open it in Air Sharing. I clicked that. It opened it. Dark images, just like in GoodReader.
  7. Strafe macrumors newbie

    Jun 30, 2007
    I've noticed dark images in both GoodReader and MyPDFs. I wonder if they are all using the same rendering engine?
  8. w00tini macrumors 6502a

    Feb 28, 2008
    im sorry webnasty. it worked for me bro. sorry :(
  9. Webnasty thread starter macrumors member

    Sep 8, 2008
    No worries, it's all good. Thanks for trying to help! :)
  10. bluedog3401 macrumors regular

    Sep 4, 2008
    I'm guessing your Macbook and the Preview app and certainly the Adobe Reader software looks at the calibration and color profiles of your display. It may be the pdf applications on the ipad and phone are not honoring the embedded colorspace and profiles of the images/pdf.

    If that's the case, a software update from Apple for its pdf rendering on the phone/tablet would be needed or a special renderer from the 3rd party would have to be developed to do so. Since PDF rendering is already built-in I don't see that happening. Its no development to add viewing PDFs to an app, but if you have to write your own 'viewer' to honor color the only people willing to do that would be Apple, Adobe or some 3rd party developer who specializes in graphics.
  11. SCMaverick macrumors member

    Feb 22, 2006
    I know this thread is 6 months old, but does anyone know how to fix this or if there even is a fix.

    I would like to be able to keep my Magazine/Program Book work on my iPad to show off, but the images are way too dark and over saturated.

  12. whocaresit macrumors 6502a

    Jul 18, 2010

    Example PDF please..
  13. vastoholic macrumors 68000


    Jan 28, 2009
    Tulsa, OK
    I've never had a problem with PDF's being too dark. I have never used any that I have scanned personally, they have been pdf's I've downloaded from the internet (training manuals, books, etc.) I'm not sure if I actually had too many image heavy pdf's that weren't black and white really so I'm not sure if I'm looking at the same kind of pictures you are.
  14. KrisD macrumors newbie

    Aug 5, 2010
    Dark PDFs

    Hi everyone,

    Was just trying to figure this out myself today. I have an iPad and GoodReader, with 4 PDFs.

    3 of the PDFs were fine, with the same colours and tones as I have on my computer. The other (which is the only one I exported myself) was extremely dark.

    After playing about a bit with InDesign, I changed the 'colour' preferences, in the 'Output' section when exporting to PDF. When I changed the 'Destination' to 'Apple RGB', my PDF now looks fine on the iPad.

    I understand that this isn't much help to anyone who's just downloaded PDFs from other sources, but for anyone who has to export them themselves, changing the colour destination to RGB worked for me.

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