An access log includes a record of all of the files that have been requested by the visitors while exploring your site. The list is thorough, so in case you have a webpage with 2 embedded images, for instance, all of the three files will be in the log, not just the page. An access log typically features the date, the Operating System, the Internet browser and the IP address for each file in human-readable form, so you can get a more complete picture about the most popular files on your site. The log, which is also typically called "raw data", is an addition to the web data that you normally get with a hosting account, not a substitute. One example why you may require this type of a log is if you wish to use some software on your PC to prepare a report about the website’s overall performance, but you don't want to use the standard graphs and tables which come with the server-generated site statistics.