Skip navigation

Resolution of photos in photo book

1464 Views 9 Replies Latest reply: Nov 3, 2012 10:14 AM by John Kraft RSS
Elain Michel Calculating status...
Currently Being Moderated
Sep 13, 2012 8:32 PM

I have created a photo book of 100 pages, 300 photos, in JPEG format, each photo is around 2M in size.  Very slow to upload to Apple online store. Perhaps the file size of the photos are too big.  What should I do now?

print photo book , Upload photo book to Online store
  • BorisKon Level 1 Level 1 (10 points)
    Currently Being Moderated
    Sep 22, 2012 12:34 AM (in response to Elain Michel)

    For iBooks:

    - cover                             =  1536  x  2008 pixels,  72 ppi;

    - all other (full window) =  2048 x 1496 pixels, 144 ppi.

  • prkos Calculating status...
    Currently Being Moderated
    Sep 29, 2012 2:40 PM (in response to BorisKon)

    2048x1496 exceeds the limit of 2000000 pixels per image.


    from iBookstoreAssetGuide5.0:


    We recommend providing images that are at least 1.5 times the intended viewing size up to a maximum

    of 2 million pixels (image height multiplied by image width should be less than 2,000,000px). Two million

    pixels is the largest image size allowed. For example, a single-page, full-bleed image should be around

    1200px by 1600px.


    Elain you can use image editing software to batch resize and reduce quality (size) of your jpegs. Which image editing software do you usually use?

  • vinnyvg Level 4 Level 4 (1,585 points)
    Currently Being Moderated
    Oct 1, 2012 5:49 AM (in response to prkos)

    Not sure if I am rocking the boat.. this is from Apple support page re Image Gallery


    When you publish or export your book, images are automatically scaled down to a width of 2048 pixels for viewing books on an iPad with a Retina display. These images can be viewed on an iPad without a Retina display (iPad and iPad 2), but may result in degraded performance while viewing the book. You can improve viewing performance on an iPad without a Retina display by using images no wider than 1024 pixels.

    This  should access the  full article:



    Are images used to create a gallery processes diffently than inserted photo images to a book page??



  • prkos Level 1 Level 1 (5 points)
    Currently Being Moderated
    Oct 3, 2012 5:29 PM (in response to vinnyvg)

    I guess they are different. I code by hand and have never used iBooks Author so I'm not familiar with how it should be used, but if you're using it you should follow whatever guidelines are set for it, if you're using Gallery and you care for older devices scale the images down. Nothing beats a real device test though, so build the book, upload to a device and check and see maybe it works with large images just as well.


    But I don't think it applies to other workflows, Elain didn't mention iBooks author so I'm assuming she isn't using it.

  • John Kraft Calculating status...
    Currently Being Moderated
    Nov 2, 2012 9:59 PM (in response to Elain Michel)

    Hoping this question adds to the value of the thread.  I'm creating a fixed placement iBook using HTML and images, not iBok Author.  I was relying on and then realized they offer no direct support for their training content.  I just want to know, for a children's book that is viewed in landscape, what my total image dimensions should be for best performance on retina and older.  I'm nearly 30 pages through a 44 page book and I've created landscape full-spread images to be 1120 x 720.  That translates into two pages by the way.


    When I view this on iPad with retina display it looks great, but when I double click it's not too great.


    Quesiton: WHat in the world is the right dimension.  I see advice all over the map. 


    Thank you.

  • BorisKon Level 1 Level 1 (10 points)
    Currently Being Moderated
    Nov 3, 2012 3:03 AM (in response to John Kraft)

    Charts "Layout sizes for iBooks Author":

  (69 KB).


    This is a part of my upcoming book "iBookstore nuances."

    You can see some examples of my calendars "2013 calendar ..." in iBookstore.

  • vinnyvg Level 4 Level 4 (1,585 points)
    Currently Being Moderated
    Nov 3, 2012 5:46 AM (in response to John Kraft)

    Apple  state what image sizes are accepatable using iBA.  They say  that any image over 2megapixels will be rejected. In truth I have  had some leeway on that.


    I imagine that  however you make your book, the content needs to comply with the standards set  for iBA. IF you intend to  submit to the iBookstore.


    Images sizes are best taken to be suitable for Retina display and ignore any other options.


    2048 x 1536 Res 264,  or....   2048 x 1496 Res 264


    This is landscape,  swap around to suit Portrait.  Just remember to set the resolution first if you are re-sizing.


    Once you have your images fornatted to those sizes, you can fix the size on the page as you want it.



    Edit:  Any critics should know this is how I have added images to ten photo books which  have  gone into the  store in the past 3 weeks.... without  tickets !

  • BorisKon Level 1 Level 1 (10 points)
    Currently Being Moderated
    Nov 3, 2012 6:37 AM (in response to vinnyvg)

    All dimensions and resolution (full pages) of my charts = 2048 x 1496 pixels.


    2048 x 1496 pixels  =  197.0 x 143.9 mm,   264 ppi

    2048 x 1496 pixels  =  256.3 x 187.2 mm,   203 ppi

    2948 x 1496 pixels  =  361.2 x 263.9 mm,   144 ppi


    You can rename any file *.Ibooks to *. zip and look, what in there with sizes and resolutions of images.

  • John Kraft Level 1 Level 1 (25 points)
    Currently Being Moderated
    Nov 3, 2012 10:14 AM (in response to BorisKon)

    Thanks to both of you for the detailed help.  So simply put if I wanted to I could create full-spread images at 2048 x 1496 at 264 ppi, then split them in half to create the individual pages (left and right) and use CSS to place the fixed HTML text.  Is that accurate?


    BTW at 1120 x 720 spread and 560 x 720 single page (300 ppi), the book actually looks great in iBook Proofer.  It's just if someone really wantedt to zoom in that it gets a bit funky, but from a purely functional standpoint it looks great, especially with the rendered HTML text.  Trying to decide if it's worth it to go back in and format to higher res (I can based on source artwork but it would take some time).





    PS:  Is Book Proofer supposed to show the full book, or just the first 8 pages or so?  Mine doesn't render the entire book.


More Like This

  • Retrieving data ...

Bookmarked By (1)


  • This solved my question - 10 points
  • This helped me - 5 points
This site contains user submitted content, comments and opinions and is for informational purposes only. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.