ZohoViewer
Q: What is Zoho Viewer? A: Zoho Viewer lets you upload documents for viewing or sharing it online. Q: What kind of files can I upload? A: You can upload document files like doc, xls, ppt, pdf, txt, etc. Refer here for a full list. Q: Do I need to have Microsoft Office installed?
faq
View a Private Document
To view a private document, you can post the document to Zoho Viewer as a multi-part form submit and get back a temporary URL to view the document. Request: You would need to send a HTTPS POST request with the file to Zoho Viewer. Here is a sample form and the supported parameters. <form name="myform" action=" https://viewer.zoho.com/api/view.do" method="post" enctype="multipart/form-data"> <input type="hidden" name="apikey" value="your_api_key_here"/> <input type="file" name="file" size="38"/> <input type="submit" name="submit" value="Upload"/> </form>