How can I use LINER in iBooks? Brian January 06, 2021 13:25 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 install 'LINER for Opera' Comments 0 comments Please sign in to leave a comment.