PDF is one of the most used file format for publishing and sharing documents. It is widely used because of its ability to store and save format in original state. For viewing PDF files you will have PDF viewer software installed on your computer. If you do not have any such software installed then you can use online PDF viewers to view PDF files easily.

There are many online alternatives available which offer you to view any PDF files online and there are some services using which you can share and collaborate files online. Here are some of the best online PDF viewers which you can use for free.

Google docs

Google docs can also be called as online office suit. Using this service you can create, view and edit documents easily. You can upload and view PDF files in Google docs to view them as HTML but cannot edit them. You will need to have a Google account to use this service. Google docs allow you to share any documents that you upload to this service with anyone.

DocQ

DocQ is a free web application to store and view documents online. You can upload PDF documents directly from your computer or provide a link to get PDF file. There is also an option to view PDF files in edit mode where you can make changes to the documents online and download changed version of the document or share it online.

Scribd

Scribd is a web service which allows you to view PDF files for free. You can upload any PDF files to this web application to view them online for free. It renders PDF files as a flash widget within the web browser. You can also use this service to publish and to find writing of millions of people online.

PDFescape

PDFescape is on online PDF application which you can use it to view and edit PDF documents online. You will just need to have a modern internet browser and internet connection to use this service. You can also create new PDF documents in PDFescape.

PDFmeNot

PDFmeNot is an online service to view PDF files right in your web browser. Just enter the URL of a PDF file in the space provided or upload a PDF file directly from your computer. You can view PDF files as HTML in your web browser without the need to download or install any plug-in or applications on your computer.