We identify these patterns by looking at the activity of millions of web users throughout the world, and using data normalization to correct for any biases.The more traffic a site gets, the more data we have to calculate estimated metrics.If a site has Certified Metrics instead of estimated, that means its owner has installed code allowing us to directly measure their traffic.
For other sites, we display the estimated number of unique visitors from up to 6 countries, when sufficient data is available (Advanced plans only).
Audience Geography The audience geography data describes where visitors to this site over the past month are located, and how the site is ranked in popular countries. Engagement metrics help you understand how interested a site's visitors are with the site's content.
Certified Site Metrics are metrics that are directly-measured from the website instead of estimated.
The website owner has installed an Alexa Certify Code on the pages of their site and chosen to show the metrics publicly.
Not all websites implement our on-site analytics and publish the results.
For these sites, we show estimated metrics based on traffic patterns across the web as a whole.