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.
For the website owner Certified Metrics provide:
A more accurate Alexa Rank
A private metrics Dashboard for On-Site Analytics
The ability to publish unique visitor and pageview counts if desired
Certified Metrics are available with all Alexa Pro plans.
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.
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.
Estimates are more reliable the closer a site is to being ranked #1. Global traffic ranks of 100,000+
are subject to large fluctuations and should be considered rough estimates. If a site has Certified Metrics instead of estimated, that means its
owner has installed code allowing us to directly measure their traffic.
These metrics have a greater level of accuracy, no matter what the
ranking. Learn more about Alexa's Data
Unique Visitors and Pageviews
The number of people who visit this site and the number of pages they view.
Site owners who install the Alexa Certify Code on their website can choose
to display their Certified Metrics, such as Monthly Unique Visitors and
Pageviews, if they wish. Coming soon, estimated metrics will be displayed
for many sites if Certified Metrics are not available.