Dioretsa is a PDF viewer that allows users to manage PDF files in tabs. It enables users to view the PDF file name in the tab and window title, select tabs from a list, search words from a search box, and display the outline of PDF files. Furthermore, it provides users with the ability to view in full screen, show the current PDF file in Finder, and switch between tabs. To open PDF files, users can press ⌘+O, click the "open PDF file" button, drag and drop the PDF file to the Dock icon of Dioretsa, or right-click on PDF files and select Dioretsa in the "open file (PDF only) with..." option.
