Cheerio provides ultra-fast static HTML parsing, while headless Playwright browsers execute JavaScript to extract dynamic client-rendered single-page apps.
The extraction distinction between fast HTTP HTML parsing (Cheerio) and headless browser automation (Playwright) capable of executing client-side JavaScript before content extraction.
Static sites (WordPress, Shopify) return pre-rendered HTML that Cheerio can parse in milliseconds with minimal CPU overhead.
Modern Single-Page Applications (React, Vue) return empty HTML shells that require a headless browser to execute JavaScript and render the final DOM tree.
SiteMind employs a smart crawler that uses Cheerio for lightning-fast static parsing and falls back to headless browser rendering for heavy JavaScript applications.
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Related Technical Concepts
Website Crawler Concurrency
Crawler concurrency controls how many web pages are fetched and indexed simultaneously without overwhelming the target website’s server.
Sitemap XML Ingestion
Sitemap XML ingestion allows an AI crawler to discover and index all authoritative URLs published in a website’s `sitemap.xml` file.
Semantic Chunking
Semantic chunking breaks long documents and web pages into focused, self-contained sections so retrieval systems can pull exact answers without token bloat.
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