The free website check tests the technical basics: encryption, loading time, page title and description, heading structure, mobile rendering, image descriptions, imprint and privacy policy, robots.txt and sitemap. These are the points where most small business websites give away visibility — and they can almost always be fixed.

What it doesn't test: your rankings. Whether your site appears on Google for the right search terms and what competitors are doing is a different question from clean technology — an SEO check of rankings needs different tools and a person to interpret the numbers.

The check is built honestly: no sign-up, no PDF that only arrives by email, no panic percentages. If your site is in good shape, it says so.