JavaScript SEO
A practical learning path for understanding why JavaScript websites can look complete to visitors while bots receive a thin app shell.
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JavaScript SEO: why bots may not see your content
JavaScript websites can look complete in the browser while search engines and AI crawlers receive a thin HTML shell. This guide explains why that happens and what to do about it.
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How to audit crawler readability across an XML sitemap
Scan important sitemap pages for thin raw HTML, missing metadata, and JavaScript app-shell signals before checking each page in detail.
Read article5 free tools to check what search engines and AI crawlers see
Use the right crawler tool for one page, a raw-versus-rendered comparison, a technical score, discovery files, or a sitemap-wide first pass.
Read articleJavaScript SEO, AI crawlers, and prerendering: the complete starting point
A practical map of JavaScript SEO, AI crawler readability, rendered HTML, prerendering, SSR, and setup choices for already-shipped sites.
Read articleHow to check what Google and AI crawlers see on your website
You do not need to guess what bots see. You can test crawler responses directly and compare them with what a visitor sees after JavaScript runs.
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AI crawler visibility
Understand what GPTBot, ClaudeBot, PerplexityBot, and other crawlers can read.
Prerendering basics
Compare prerendering, SSR, static export, and rendering fixes for already-live sites.
Rendering safety
Preserve status codes, content parity, route privacy, crawler access, metadata, and structured data.
Integration guides
Hosting and platform-specific notes for Cloudflare, Vercel, Netlify, cPanel, VPS, React, Vue, and Vite sites.