An access log is a complete list of all the files which were accessed by the visitors of a particular website. Every file which was requested in some way shall be listed, so if you have only one webpage with three embedded pictures, one video and one embedded text file, as an example, the access log shall contain a total of 6 entries - one for each of the 6 files that were accessed when the website visitor opened the page. A log usually provides the file name and path, the date, as well as the visitor’s OS, Internet browser and IP address. Oftentimes you could also find the referrer sites that sent the visitors to your website. The info that an access log file provides is in human-readable plain text format. It can also be processed by special software on a desktop machine and used to write reports on the overall performance of a website, in addition to the web statistics which your server may have generated.