--- title: Why script-based analytics can never see AI crawlers description: Traditional analytics tools (GA4, Plausible, Fathom, Umami, PostHog) all measure pageviews via a client-side script, which means blocked scripts undercount... canonical: https://daily.dev/posts/why-script-based-analytics-can-never-see-ai-crawlers-0hucznren twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Why script-based analytics can never see AI crawlers | daily.dev og:description: Traditional analytics tools (GA4, Plausible, Fathom, Umami, PostHog) all measure pageviews via a client-side script, which means blocked scripts undercount... og:url: https://daily.dev/posts/why-script-based-analytics-can-never-see-ai-crawlers-0hucznren og:image: https://api.daily.dev/og/posts/0huCZnRen.png og:image:alt: Why script-based analytics can never see AI crawlers og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Why script-based analytics can never see AI crawlers **[Elvin](https://daily.dev/sources/p4aymb70h)** · [@elvinaghalarov](https://daily.dev/elvinaghalarov) · 5 min read · 1 upvotes · 0 comments ## Summary Traditional analytics tools (GA4, Plausible, Fathom, Umami, PostHog) all measure pageviews via a client-side script, which means blocked scripts undercount real visitors and AI crawlers like GPTBot are entirely invisible since they never execute JavaScript. The proposed fix is moving measurement into the request path itself using a Cloudflare Worker route that counts pageviews as HTML is requested rather than when a script runs, making crawler traffic visible and immune to ad blockers. The piece details engineering constraints for building such an edge-based collector safely (never blocking the origin fetch, deferring measurement with waitUntil, touching only HTML documents, returning plain 502s on failure) and a subtle routing bug around Cloudflare's same-zone subrequest behavior that cannot be reproduced locally. It closes by promoting GhostPane, a self-hosted, cookieless analytics tool built on Workers, D1, and Durable Objects that implements this approach. ## Content Every analytics product you have used works the same way: a `