The Download Now link will prompt a local download of the Google Chrome extension. To install the extension directly, open the file using your Chrome browser.
Search PDF links in web pages and open with Google Docs Viewer.
gPDF is a handy tool to view PDF files online. It scans webpages for PDF links and set them to open with Google Docs Viewer. You don't need any desktop based PDF viewer (like : Adobe Reader) to open a PDF link. gPDF changes the destination URL for PDF link and set it to open with GDocs Viewer.