I made a decision not to sign up for Apple's iBooks publishers' account (mainly because I don't own a Mac and use a Linux box most of the time -- also I don't want to buy ISBN numbers for my ebooks when selling them). However, I would likely be uploading content to the Apple store via Smashwords.

How can I find out the latest formatting requirements and CSS support for Apple's iBooks?

Unlike Amazon, for some reason, Apple doesn't make this information available anywhere. Can you recommend a good online resource for preparing your content for iBooks?

I can follow the Smashwords formatting requirements (and I have an iPad and iPhone to test things on), but some store/device specific information might make it easier to figure things out with.

  • 2
    Are you sure you don't need an ISBN if you want to upload your Smashword publication to the apple store? smashwords.com/about/supportfaq#apple
    – Anthon
    Commented Mar 10, 2014 at 6:02
  • Anthon, wow, thanks for this information! What a mess -- is Apple conspiring with Bowker? This is something Smashwords should have taken care of.... Commented Mar 10, 2014 at 15:38
  • Update: Smashwords provides free ISBNs, so that's not an issue. Commented Mar 14, 2014 at 20:10

2 Answers 2


Yes, you can get a PDF of the iBooks Asset Guide from their site: https://itunesconnect.apple.com/docs/iBooksAssetGuide5.1Revision2.pdf


Newest version (as of 8/2/2016) v5.2.5 is on itunes connect.

Tried editing the url from @Tom's answer and found this:


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