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What is PDF? Portable Document Format is a file format created by Adobe Systems in year 1993. This was created for the purpose of document exchange. PDF represents two dimensional in such a manner which is independent or free from any specific application, hardware, operation etc. One can encrypt a PDF file for security reasons. The standard security provided in PDF is “user password” and “owner password”. Through this, editing and printing of the document can be restricted. One can also restrict “Copy” command on PDF file or document. There are numerous E books made on PDF files because there is no threat for it to be edited straight away.

Today, when someone starts searching on internet for some information, he comes across a lot of PDF files also. At times, people want only PDF files. 3PDF.com is a website that offers free PDF files to the users. This website works in association with Google. This site not just gives an opportunity to the user to download PDF files; it also refers to some Popular PDF files for the benefit of the users. One can search as per his choice or can also check the suggestions made by this website for popular PDF Files. No doubt this website is a boon for people on a lookout for PDF documents and files. If someone wants to edit PDF content, then there is special software for it. So, browse through the site and find what you want.