How can I use LINER in iBooks? Brian Woo October 14, 2018 01:20 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 How to install 'LINER for Opera' Which platform does LINER support? Comments 0 comments Please sign in to leave a comment.