Web log analysis software
# Web log analysis software

Web log analysis software (also called a web log analyzer) is a kind of web analytics software that parses a server log file from a web server, and based on the values contained in the log file, derives indicators about when, how, and by whom a web server is visited. Reports are usually generated immediately, but data extracted from the log files can alternatively be stored in a database, allowing various reports to be generated on demand.

Features supported by log analysis packages may include "hit filters", which use pattern matching to examine selected log data.

## Common indicators

* Number of visits and number of unique visitors
* Visit duration and last visits
* Authenticated users, and last authenticated visits
* Days of week and rush hours
* Domains/countries of host's visitors.
* Hosts list
* Number of page views
* Most viewed, entry, and exit pages
* File types
* OS used
* Browsers used
* Robots used
* HTTP referrer
* Search engines, key phrases and keywords used to find the analyzed web site
* HTTP errors
* Some of the log analyzers also report on who is on the site, conversion tracking, visit time and page navigation.
