An access log features a record of all of the files that have been requested by the visitors while surfing around your website. The list is comprehensive, so when you have a web page with 2 embedded images, for example, all of the three files will be in the log, not only the page. An access log normally includes the date, the OS, the web browser and the IP address for each and every file in human-readable form, so you can get an idea about the hottest files on your site. The log, which is also frequently referred to as "raw data", is an addition to the web data which you normally get with a hosting account, not a substitute. One example why you might need this type of a log is if you want to use some software on your PC to prepare a report about the website’s efficiency, but you do not want to use the regular graphs and tables that come with the server-generated website stats.