An access log is a detailed list of all the files which were accessed by the guests of a given site. Any file which was requested for some reason will be listed, so if you have one webpage with 3 embedded images, one video and one embedded text file, as an example, the access log will contain a total of six entries - one for every of the 6 files that were accessed when the site visitor opened the page. A log normally shows the file name and path, the date, along with the visitor’s OS, Internet browser and IP address. Oftentimes you can also find the referrer Internet sites that sent the visitors to your website. The data that an access log file features is in human-readable plain text format. It can also be processed by special software on a PC and used to prepare reports on the overall performance of an Internet site, besides the web statistics your hosting server may have generated.