How can I use LINER in iBooks? Brian Woo September 09, 2019 12:41 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 How to install 'LINER for Opera' Which platform does LINER support? Comments 0 comments Please sign in to leave a comment.