How can I use LINER in iBooks? Brian Woo January 10, 2019 22:31 Updated Follow We're sorry to tell you that you can't use LINER in iBooks. LINER only supports HTML and PDF format. Related articles How to highlight PDF files? How to Highlight on Android How to highlight on iOS Which platform does LINER support? How to highlight on Chrome browser Comments 0 comments Please sign in to leave a comment.