---
type: "Article"
title: "DOM Consistency Check for Prerendered Pages"
description: "Measure DOM consistency — the gap between crawler HTML and hydrated DOM — and avoid navDemotion when snapshots drift."
resource: "https://prerender.info/blog/hydration-dom-consistency-check"
tags: [Technical Architecture, DOM consistency, hydration mismatch, navDemotion, prerendering SEO, Googlebot DOM snapshot]
timestamp: 2026-04-29T00:00:00Z
---

# DOM Consistency Check for Prerendered Pages

Measure DOM consistency — the gap between crawler HTML and hydrated DOM — and avoid navDemotion when snapshots drift.

## Source

Generated from prerender.info editorial content (single source of truth). The canonical, always-current version is the `resource` URL above. Claims reflect prerender.info / ostr.io editorial guidance and are not confirmed from third-party public documentation unless explicitly linked.