when we have or has an in the form of Photoshop files (PSD), Illustrator (AL), Fonts (TTF), Figure AutoCAD (DXF) and office documents 2010 (such as docx, xlsx, and PPTX) to view these files, we now no need to install the software of the files.what we need is an internet connection:) and visit the google docs website, login, and upload the files. google docs will convert your files automatically.
And if the files That you are Trying to open is already on the web, you do not even have to bother uploading it to your Google Docs account. Copy the public URL of That file and pass it to Google's online viewer at docs.google.com /viewer.