Adobe’s PDF document format is everywhere! PDF stands for “Portable Document Format” and its used by publishers to distribute eBooks, user manuals, course study guides, and all sorts of documents. PDFs may be downloaded and displayed on computers, ebook readers, and many other hand-held devices.
Since most computers come with the free Adobe Reader software, almost everyone is able to view PDFs as soon as they turn on their device. However, if you use Adobe’s free Reader software to view these documents, you won’t be able to make changes or annotations.

(Above: A Sample eBook Page Annotated by PDF XChange Viewer)
Enter Tracker Software’s amazing free software, PDF-XChange Viewer.









