Technical SEO has always mattered for Google. For AI search, it matters differently. AI engines don't penalize slow sites with lower rankings — they simply can't read sites that fail basic technical requirements. GEO Auditor's technical engine checks the subset of technical health signals that most directly affect AI search visibility.
What the technical engine audits
The technical score is built from eight dimensions:
Crawlability
Beyond robots.txt (covered by the crawlers engine), crawlability checks include robots.txt validity, sitemap presence and accessibility, canonical tag implementation, and whether your site has any HTTP-to-HTTPS redirect issues. A missing or malformed sitemap means AI crawlers may only ever discover your homepage.
Indexability
Canonical tags prevent AI engines from indexing duplicate content and diluting your authority across multiple URLs. Missing canonicals — especially on paginated content, filtered URLs, or www vs. non-www variants — are one of the most common indexability issues we find.
Security
AI engines, like traditional search engines, treat HTTPS as a baseline trust signal. The technical engine checks:
- HTTPS enforced (HTTP redirects to HTTPS)
- Valid SSL certificate
- No mixed content (HTTP resources on HTTPS pages)
- HSTS header present
- Content-Security-Policy header
- X-Content-Type-Options and X-Frame-Options headers
- Referrer-Policy header
Missing security headers are a common quick win — they can be added via your CDN (Cloudflare, Vercel, Netlify) with no code changes.
URL structure
Clean, descriptive URLs are easier for AI engines to classify. Paths like /blog/what-is-geo signal topic clearly; paths like /p?id=4821&ref=sidebar do not. The engine checks for query-string-heavy URLs, excessive URL depth, and inconsistent trailing slash usage.
Mobile optimization
A correct viewport meta tag (width=device-width, initial-scale=1) is a baseline requirement. Many AI crawlers fetch pages in a mobile-equivalent context, so sites that serve degraded content to mobile user-agents may be showing AI crawlers an incomplete version of their site.
Core Web Vitals
The engine checks LCP (Largest Contentful Paint), INP (Interaction to Next Paint — which replaced FID), and CLS (Cumulative Layout Shift). These are sourced from Chrome User Experience Report data where available, or estimated from PageSpeed Insights otherwise.
Poor Core Web Vitals don't directly prevent AI crawling, but they're a signal of overall page quality and affect Google's AI Overviews inclusion decisions.
Server-side rendering
This is one of the most important and most overlooked technical checks for AI search. AI crawlers typically do not execute JavaScript. If your content, schema markup, or internal links are injected by client-side JavaScript, AI crawlers see an empty page.
The engine checks whether your main content, schema markup, and internal links are all present in the initial HTML response — before any JavaScript runs. Sites built with client-side-only frameworks (some React SPA setups) frequently fail this check. Next.js with SSR/SSG, Astro, and Hugo all pass it by default.
Page speed (TTFB)
Time to First Byte is a proxy for server responsiveness. High TTFB (above ~600ms) can cause crawlers to time out or deprioritize your site. It also affects how many pages a crawler visits per session — a slow server means fewer pages indexed.
IndexNow
The engine also checks whether you've implemented IndexNow — a protocol supported by Bing, Yandex, and other search engines that lets you instantly notify them when a page is published or updated. Bing's data feeds Microsoft Copilot, so fast indexing via IndexNow is a minor but real AI search benefit.
Quick wins in technical health
Most technical issues GEO Auditor finds fall into one of two categories: zero-effort CDN settings (security headers, HTTPS redirect) or framework-level fixes (adding canonical tags, enabling SSR). The paid report gives you exact steps and code for each.
Run a free scan to see your technical health score and the specific issues affecting your AI search visibility.