Many websites do not publish their traffic figures, so it can often be difficult to get accurate values. However, some commercial websites offer media data as PDF files or else on an extra advertising page: there you will find all relevant traffic figures and even demographic data on visitor groups. Because information about traffic and target groups is extremely important for companies that want to advertise on websites, website operators only publish their figures out of self-interest to woo potential advertising partners.
Not all web traffic is welcomed. Some companies offer advertising schemes that, in return for increased web traffic (visitors), pay for screen space on the site. There is also "fake traffic", which is bot traffic generated by a third party. This type of traffic can damage a website's reputation, its visibility on Google, and overall domain authority.