Advanced reading experience From the first document you select, PDF Expert springs into action with smooth scrolling and fast search. Select the most relevant layout to quickly accomplish your task, whether you compare 100 page contracts or read a short article. Edit PDFs. Now its possible. PDF Expert is the best PDF writer for Mac. You can easily edit text, images and links. It will automatically detect the font, size, and opacity of the original text, so you can make edits easily. Fill PDF forms. Sign contracts. Easily fill out PDF forms such as applications or tax forms. Sign contracts with a personal, legally binding electronic signature in a few clicks. Integrate. Share. Collaborate. ollaborat with clients and team members by adding notes and comments to documents. Protect sensitive information with a password. Work across your iPhone, iPad and Mac Use PDF Expert on any Apple device iPhone, iPad, and Mac. Seamlessly transfer documents between your devices.