FromĀ Adobe Systems:

Adobe Reader for Windows 8 is the free, trusted leader for reliably viewing and interacting with PDF documents across platforms and devices. Desktop users with keyboard and mouse may prefer to install and use Adobe Reader XI.
It features quickly open PDF documents from email, the web, or anywhere on your device, easily find your most recently read documents, view password-protected PDFs, annotations, and drawing markups, search text to find specific information, select single page or continuous scroll modes, easily zoom in on text or images for a closer view, use bookmarks to jump directly to a section in your PDF document, quickly navigate through large documents using the Semantic Zoom thumbnail view, tap on links in a PDF to open linked web pages, share PDFs with other applications using “Share”, and Email PDFs as attachments.
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