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Turtle91 · 02-13-2017, 08:02 PM

Looks like you got it figured out. However, for anyone else that might be wondering how to do this:

1) Rename the file extension from .epub to .zip
2) Open up the zip file and navigate to the .opf file
3) Change the <package version="3.0" ...> to version="2.0"
4) Save the zip
5) Rename the file extension from .zip to .epub
6) Open with your epub editor of choice and remove any other ePub3 specific tags that you don't wish to keep. i.e. <section></section>

You can create a basic ePub3 (one that doesn't use all the extra media features) and it will be readable in most of your larger devices/apps. ePub3 is the successor to ePub2 (at least until a newer version comes out) and more devices/apps are supporting those files. I dare to say that all of the current devices/apps still support ePub2 so that's why the majority of ePubs are still made in the version 2 format. If your target audience supports ePub3, then there really isn't a reason to avoid ePub3...it doesn't hurt anything...other than, maybe the sensibilities of a certain individual here on MR.

02-13-2017, 08:02 PM	#7
Turtle91 A Hairy Wizard Posts: 3,361 Karma: 20212223 Join Date: Dec 2012 Location: Charleston, SC today Device: iPhone 15/11/X/6/iPad 1,2,Air & Air Pro/Surface Pro/Kindle PW & Fire	Looks like you got it figured out. However, for anyone else that might be wondering how to do this: 1) Rename the file extension from .epub to .zip 2) Open up the zip file and navigate to the .opf file 3) Change the <package version="3.0" ...> to version="2.0" 4) Save the zip 5) Rename the file extension from .zip to .epub 6) Open with your epub editor of choice and remove any other ePub3 specific tags that you don't wish to keep. i.e. <section></section> You can create a *basic* ePub3 (one that doesn't use all the extra media features) and it will be readable in most of your larger devices/apps. ePub3 is the successor to ePub2 (at least until a newer version comes out) and more devices/apps are supporting those files. I dare to say that all of the current devices/apps still support ePub2 so that's why the majority of ePubs are still made in the version 2 format. If your target audience supports ePub3, then there really isn't a reason to avoid ePub3...it doesn't hurt anything...other than, maybe the sensibilities of a certain individual here on MR.