PDF and HTML (the page you are looking at is the HTML written by) there are many similarities .

PDF as NETSCAPE and IE can browse. Can also print out (sufficient to maintain the original effect), or reserved for later arrested them.

you do not need to download the entire PDF document and then re-read. Be the first part of data, on-demand feature to download the page to other pages. That is to say after reading the first page you can immediately jump to the seventh page, do not have to waste a bit of time to download and so on.

PDF documents to support the full-text search.

PDF documents have excellent security. Can be created to prevent others from copying, change, print the PDF text and images.

PDF documents small, the PDF file format HTML format can be the size of 1 / 5.