The Stamp Signature tool is convenient, as it captures, stores, and overlays your handwritten signature on PDF files. It even password-protects your saved signatures so other users can't gain access. To use it, just snap a photo of your signature and create a QuickSign profile within Nitro.
Nitro Pro's Auto Recovery is another useful feature. With it, you can rest assured that your work can be restored in the event of a system or program crash. The feature is enabled by default, and can be customized to back up your changes at different intervals.
While it's true Nitro Pro comes filled to the brim with features, where it really excels is performance. It opens files significantly faster than other PDF programs, including Adobe Acrobat. Plus, all of its tools work smoothly, without performance lags. I was impressed by the speed with which I could edit images, combine multiple PDFs, convert PDFs to other formats, and perform other typical operations.
One thing Nitro Pro should incorporate in future versions is multimedia embeds. Today, Acrobat is ahead on this front, as Adobe's product does let you add interactive elements like audio and video clips to PDF files. Granted, the lack of this functionality isn't likely to disappoint too many of Nitro's core users. But given the fact that Adobe is pushing its software in this direction, I do expect to see "interactive PDFs" become more popular.
Overall, Nitro Pro 8 provides everything you could ask for from an all-in-one PDF solution. With its rich feature set and intuitive interface, it makes it a snap to handle PDF files and forms. Plus, it gives you the power to add stamps, watermarks, and security to your documents, all for a smaller price tag than that of Adobe Acrobat.