File with a .LOG extension contains different types of event logs, usually stored in text format with the date and time defined. LOG file is a general extension, used by different programs in different ways. They are also used by operating systems or servers, in order to store information about problems in functioning, user’s monitoring or condition of a network.

On the basis of some LOG files, rapports and statistics can be created, which represent gathered data in graphical way. Similar applications or operating systems often use LOG files to solve problems or report errors, by installers in order to locate packages being installed, and programmers use is for testing of an application.