How can I use LINER in iBooks? Brian Woo January 26, 2018 09:29 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 iOS How to Highlight on Chrome Browser Which platform does LINER support? How do I delete my account? Comments 0 comments Please sign in to leave a comment.