Our previous how-tos shared tips on saving storage space on your iPhone, iPod touch or iPad by removing photos, videos, songs and apps. And last week, we shared an excellent tip on clearing ‘Other’ storage occupied by Safari's Reading List, app caches and temporary data.
With that in mind, you'd be surprised to learn that electronic books can take significant amount of storage space.
While a typical book found on the iBooks Store is about two megabytes in size, a textbook with enhanced features like audio and video will typically require anywhere between a few hundred megabytes to up to two gigabytes of storage, per textbook.
Now, if you're anything like me, your devices are stuffed to the gills with multimedia-rich smart reads. In this tutorial, I’m going to show you how to identify the amount of on-device storage consumed by iBooks content, teach you how to reclaim storage space by removing books and PDFs you've read and share a few useful tips along the way that I bet you didn’t know about.