A technical SEO audit checks the infrastructure layer: whether search engines and AI engines can reach, crawl, and parse your pages. AuditLamp grades 157 checks across crawlability, indexability, structured data, AI bot access, and Core Web Vitals -- Gate failures first, because a crawl block voids every ranking signal below it. Free scan, whole site, no email required.
Free category scores and selected findings. Full findings and export files: $10 once.
Up to 150 pages. No email required.
A technical SEO audit checks the layer below content: whether search engines and AI engines can find, read and trust your pages at all. Google's documentation defines one piece of that map: "A sitemap is a file where you provide information about the pages, videos, and other files on your site, and the relationships between them." We test that file plus robots.txt, indexability, rendering and more, 187 registered detectors in total, gate failures first. For the complete on-page SEO picture alongside the technical layer, run a free technical SEO audit.
If a page cannot be crawled, nothing else matters. AuditLamp puts gate findings first under its own scoring policy. That policy is not a search engine ranking formula.
GPTBot, ClaudeBot, PerplexityBot and OAI-SearchBot have distinct crawler roles and robots.txt directives. Google-Extended is a separate control for certain training and Gemini grounding uses, not its own HTTP crawler. Many sites block them unintentionally through wildcard Disallow rules that were never meant to apply. We check each bot individually. See fixing robots.txt AI blocks.
JSON-LD is now a precondition for AI citation eligibility, not just a nice-to-have for rich results. We validate your schema objects against the declared types, check for required properties and score answer-block readiness.
If your content only appears after JavaScript executes, crawlers may see an empty page. "Renders without JavaScript" is a scored Gate check. A fail here is a diagnosis, not a suggestion. See fixing JavaScript rendering.
For targeted spot-checks: run the free canonical tag checker, trace redirect chains with the redirect checker, or check sitemap integrity with the sitemap validator.
Every check cites the official documentation it is grounded in. The reasoning is public in the learn library.
Visibility Scan (free): the full technical audit of your whole site, up to 150 pages. Category scores and selected findings across Gate, Core, Amplifier and Hygiene checks, with verdicts and explanations.
Full Report ($10, once): every finding unsealed with the exact page, element and fix, plus a PDF report, a prioritized action plan and an AI-ready fix file. Need a corrected robots.txt or an llms.txt right now? Our free robots.txt generator and llms.txt generator are open to everyone.
Monitor ($29/month): weekly technical health scans that catch regressions before they cost you rankings. Full terms on the pricing page.
Technical SEO covers the infrastructure layer: can search engines and AI engines access and parse your pages at all? Content-level signals sit on top of this. If your technical layer is broken, content improvements will not save your rankings. Technical SEO is the prerequisite. The broader scans live at the SEO audit tool and website audit tool pages.
A Gate failure means a critical technical issue exists that blocks meaningful scoring of the rest of your site. It gates everything below it: there is no point optimizing title tags if Googlebot cannot reach the page. Gate failures are shown first, explained in plain English, with an effort estimate.
We check the HTML-source signals that shape Core Web Vitals on every scan. When real Chrome field data (CrUX) is available for your site, the report shows it; when a URL has no field data, we say so plainly rather than substituting a guess. The full breakdown lives on the Core Web Vitals page.
Yes. We check Googlebot, Bingbot and the major AI crawlers individually against your robots.txt, and we run a full 15-bot matrix that shows exactly which crawlers are permitted and which are blocked. The AI crawler optimization page goes deeper, and the AI search optimization hub covers the whole AI layer.
Free scan of your whole site, up to 150 pages. Gate-tier findings first. No email.
Free category scores and selected findings. Full findings and export files: $10 once.
187 registered detectors · gate failures first · results in about a minute