In addition to the characteristics described above, it’s possible that your Cloudflare metrics do not fully align with data for the same site as reported by other sources such as Google Analytics and web server logs.
Once Cloudflare identifies a unique IP address for a request, we identify such request as a visit. Therefore, the number of visitors Cloudflare Analytics shows is probably higher than what other analytics services may report.
Finally, it’s likely that unique visitor data from the Cloudflare Analytics app is greater than your search analytics unique pageviews. This is because pageviews reflect when someone visits a page via a web browser and loads the entire page. However, when another site or service like a bot, plugin, or API is consuming partial content from your site (but not loading a full page), this counts as a unique visitor in Cloudflare and not as a pageview.