ZenovayTools

Analytics Accuracy Checker

Estimate how much traffic your analytics is missing due to ad blockers, browser tracking prevention, and consent rejection.

How to Use Analytics Accuracy Checker

  1. 1Enter your website URL.
  2. 2The tool detects your analytics stack and its blocking rates.
  3. 3Review per-browser data loss estimates (Safari, Firefox, Brave, Chrome).
  4. 4See your total data loss and options to recover missing traffic data.
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Frequently Asked Questions

How does this tool estimate data loss?▾
We detect analytics scripts on your page, then calculate the weighted average block rate across all major browsers using known ad-blocker and tracking-prevention adoption rates. EU consent rejection rates are added if your site targets EU users.
Why is Safari data loss so high?▾
Safari includes Intelligent Tracking Prevention (ITP) by default, which blocks or limits most third-party analytics scripts. This affects all Safari users on macOS, iOS, and iPadOS without requiring any extension.
What is consent data loss?▾
In the EU, GDPR requires cookie consent banners. A percentage of users reject tracking cookies, meaning their visits are not recorded by traditional analytics. Sites with a CMP (Consent Management Platform) typically see 30% rejection, while sites without one still lose data from privacy-conscious users.
How can I reduce data loss?▾
Switch to privacy-friendly analytics like Zenovay or Plausible that do not use cookies, do not require consent banners, and are rarely blocked by ad blockers. This can recover 20-40% of missing traffic data.
Does Brave really block 95% of analytics?▾
Yes. Brave browser includes aggressive built-in ad and tracker blocking that catches virtually all traditional analytics scripts including GA4, Facebook Pixel, and most third-party tracking.
Is the accuracy rate exact?▾
No. These are estimates based on known browser market shares and average ad-blocker adoption rates. Actual data loss varies by audience, geography, and device mix. The tool provides a directional estimate to help you understand the magnitude of the problem.