Nitro Pro lets you view all comments in your PDF file from a single location. The Comments pane lists all of the comments in your file, along with information relating to each comment.

You can view two or more PDF documents side-by-side in Nitro Pro without needing to use two screens, and without running another copy of the application.

Microsoft Rights Management (RMS) provides a service that protects and shares files by allowing you to encrypt your sensitive documents and restrict access to approved individuals only.

The Navigation Panes are useful when browsing larger PDF documents, giving you a global view of the pages and bookmarks included in the document.

This object provides support for Optional Content Groups. OCGs hold a collection of graphical objects, and are known as layers. You can dynamically switch properties of layers to make them visible or invisible to provide navigation in a PDF document.

When you click a PDF file in your web browser, the Nitro Web Browser Plugin reads the file and displays it in the web browser.

The I.R.I.S. OCR plugin fully integrates with Nitro Pro allowing it to recognize text from scanned pages, or from images in open PDF documents. The OCR utility is fully customizable, with options to configure options such as skewed image correction, to image compression settings. You can also enable text recognition for scanners directly on the Create PDF From Scanner dialog, to automatically create PDF documents from scanned pages with text that can be modified or searched.

A static object that represents the PDF viewer application.

The image arranging tools let you move images in front and behind other objects on the page, flip or mirror, and rotate them.

Just like attaching a paper file to another with a paperclip, the Attach File annotation tool enables you to attach electronic files to your PDFs files. Annotation attachments appear as a paperclip icon on the PDF page; reviewers can double-click the icon to open the file. You can view annotation attachments in the Commenting pane and the Attachments pane.