Some people solely rely on online scanners like Webbkoll to reveal trackers, cookies, and other third-party content on websites.
Only scanning the home page of a website isn't sufficient, though. Every single page can embed other content, and therefore results differ. So, you must always scan all pages to discover all trackers, cookies etc.
See also https://infosec-handbook.eu/blog/limits-webbkoll/. The main dev of Webbkoll already partially addressed our feedback.
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