---
type: "Article"
title: "Shadow DOM v2 & Custom Elements Indexation"
description: "Shadow DOM and Custom Elements isolate content from crawlers. Prerendering with full JS execution extracts Web Component HTML."
resource: "https://prerender.info/blog/shadow-dom-v2-custom-elements-indexation"
tags: [JavaScript SEO, Shadow DOM SEO, Web Components indexing, Custom Elements SEO, Shadow DOM v2, prerendering Web Components]
timestamp: 2026-04-29T00:00:00Z
---

# Shadow DOM v2 & Custom Elements Indexation

Shadow DOM and Custom Elements isolate content from crawlers. Prerendering with full JS execution extracts Web Component HTML.

## 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.