What is an SEO Render and Crawlability Analyzer?

It audits raw server-returned HTML to estimate what search engines and AI crawlers can see before JavaScript runs.

Does this tool execute JavaScript?

No. This Phase 1 version analyzes only the HTML returned by server-side fetch.

Can it detect CSR risk?

Yes. It estimates JavaScript dependency by comparing source-visible text, structure, metadata, headings, and framework signals.

Does it support sitemap checks?

Yes. It supports sitemap XML and sitemap index input for batch checks.

Selnox SEO Tools

SEO Render & Crawlability Analyzer

See what search engines can read from raw View Source HTML before JavaScript runs.

Raw HTML onlyFramework detectionAI crawlability

Analyze raw HTML crawlability

Check SSR, SSG, ISR, CSR risk, framework signals, source-visible content, schema, headings, links, images, and AI crawler readiness.

Technical SEO Support

Need help improving your technical SEO?

Selnox Infotech can improve SSR, crawlability, schema, metadata, content visibility, internal links, and AI search readiness.

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What is SSR?

Learn how what is ssr? affects crawlability, source-visible content, Google rendering, indexing, and AI crawler understanding.

What is CSR?

Learn how what is csr? affects crawlability, source-visible content, Google rendering, indexing, and AI crawler understanding.

SSR vs CSR

Learn how ssr vs csr affects crawlability, source-visible content, Google rendering, indexing, and AI crawler understanding.

Why View Source Matters

Learn how why view source matters affects crawlability, source-visible content, Google rendering, indexing, and AI crawler understanding.

JavaScript SEO

Learn how javascript seo affects crawlability, source-visible content, Google rendering, indexing, and AI crawler understanding.

Google Rendering

Learn how google rendering affects crawlability, source-visible content, Google rendering, indexing, and AI crawler understanding.

AI Crawlers

Learn how ai crawlers affects crawlability, source-visible content, Google rendering, indexing, and AI crawler understanding.

Best Practices

Learn how best practices affects crawlability, source-visible content, Google rendering, indexing, and AI crawler understanding.

FAQs

SEO Render & Crawlability Analyzer FAQs

What does this render checker test?

It checks the raw HTML returned by the server, the same source search engines and AI crawlers can initially fetch.

Does it run JavaScript?

No. Phase 1 intentionally does not execute JavaScript, Playwright, Puppeteer, or a headless browser.

Why does View Source matter?

View Source reveals whether critical content, metadata, links, headings, and schema are available before JavaScript runs.

What is SSR?

Server-side rendering sends meaningful HTML from the server before browser hydration.

What is CSR?

Client-side rendering relies heavily on JavaScript to build content in the browser.

Is CSR bad for SEO?

Not always, but critical content hidden until JavaScript can make crawling, indexing, and AI understanding less reliable.

Can this detect Next.js?

Yes. It detects common source markers for Next.js, React, Angular, Vue, Nuxt, Gatsby, Astro, SvelteKit, WordPress, Shopify, and more.

Does it support sitemaps?

Yes. It supports sitemap XML and sitemap indexes for batch raw-HTML checks.

What is AI crawlability?

AI crawlability estimates whether AI systems can understand the page from source-visible content, metadata, schema, headings, and links.

What is JavaScript dependency?

It estimates how much important content appears to depend on JavaScript rather than raw HTML.

Can I export the report?

Yes. Copy results, export CSV, TXT, JSON, or use the printable PDF report.

Is this tool free?

Yes. It is a free SEO tool by Selnox Infotech.