How to Highlight/ Underline/ Strikethrough text, Add Freehand Writing 1. Tap on the different annotation tools on the toolbar on the right. 2. You can highlight, underline, strike through and freehand write on PDFs. 3. Simply tap on the tool again to turn off the feature. Have more questions? Submit a request 2 Comments Date Votes 0 Prem Kumar July 24, 2018 21:50 How to remove highlights 0 Gina July 30, 2018 02:27 Hi Prem, 1. Tap on the section you have edited before but want to delete. 2. A “Clear” button will pop up. The instruction link is here. Hope this helps! Please sign in to leave a comment.