Stratoscope: SEO and AI Search Checker Built on Next.js A free tool on my website that checks any site the way Google and AI assistants like ChatGPT read it: indexing, titles and markup, speed from real-user data, AI crawler access, security headers and more. Findings are written in plain language, the most important first, each with a way to verify it and how to fix it. Under the hood: safe server-side fetching that blocks requests to private networks, rate limits, email confirmation and a report page by link. I run it before every proposal to show clients concrete issues on their own site.

The most useful SEO tools go beyond listing errors—they explain what matters, why it matters, and how to fix it. I’d compare Stratoscope’s findings with SerpSpur’s website audits and AI visibility insights to see which gives a more actionable picture. Testing both on the same site could reveal useful differences.