Google Docs Viewer is an online service by Google that allows you to read PowerPoint, PDF and Tiff files online without downloading them. It saves some time and hassle of downloading files to your computer before you could view them. The Google Docs Viewer is a good alternative if you don’t have the software required to open these files is not installed on a device.
Using the service is easy, go to Google docs viewer and put the URL of the file you want to read online, it will give you links to directly read the file, code for embedding the document in blogs or web pages and an HTML link for linking. This is useful for the bloggers or webmasters, instead of linking to a PDF which users can download, you can just embed in the webpage or link to it which opens in a new page.
You can directly link to the supported the files by appending the below URL to any file.
http://docs.google.com/viewer?url=
