Data Loss Impact
Enter your metrics and click Calculate to see how much data you're missing
The Hidden Data Problem
Why Cookie Banners Hurt Analytics
When visitors decline cookies (or never see the banner), cookie-based analytics tools like Google Analytics can't track them. On average, 40-60% of European visitors and 25-40% of US visitors decline or ignore cookie consent banners.
The Ad Blocker Effect
Ad blockers don't just block ads, they block analytics scripts too. uBlock Origin, Brave browser, and Safari's Intelligent Tracking Prevention all interfere with Google Analytics, Meta Pixel, and other tracking scripts. This compounds the cookie consent problem.
Common Questions
Is my Google Analytics data really that inaccurate?
Yes. Studies show GA4 can miss 20-60% of actual traffic depending on your audience demographics, geographic location (GDPR regions are worse), and tech-savviness. Privacy-focused audiences (developers, tech workers) can have 50%+ ad blocker rates.
How does first-party tracking help?
First-party tracking loads from your own domain instead of a third-party tag, which blockers catch far more often. How your consent banner applies to it depends on your jurisdiction and setup, so confirm that with whoever owns privacy compliance for your site.
What does this mean for my A/B tests?
If 40% of your visitors are invisible, your A/B test results are based on a biased sample. Cookie-accepting visitors behave differently from privacy-conscious ones. This skews your conversion data and can lead to wrong decisions.
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You just calculated how much data you're missing. Humblytics tracks first-party from your own domain and matches sessions to Stripe payments, so your reports start from revenue.
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