A free SEO checker: paste any URL, get a scored audit, no account

One run fetches your served HTML, robots.txt, llms.txt, and sitemap on the spot, then scores the three things that decide whether a page is found and understood. On-page SEO covers the title tag, meta description, a single clear H1, the canonical link, and Open Graph tags: the signals search engines read first. GEO readiness covers whether AI answer engines can use your page: JSON-LD structured data, an llms.txt file, answer-shaped headings, crawlable content, and whether AI crawlers are actually allowed in robots.txt. Sitemap health covers whether your sitemap exists, is reachable, and looks fresh.

You get one overall score and three category scores, and every individual check is marked pass, warn, or fail, not a single number you have to interpret. Each fail comes with a one-line reason and the fix, so you go straight to the weak spots instead of guessing which signal matters.

There's no email to hand over, no metered allowance counting down, and no upgrade prompt sitting on top of the findings. The check runs on demand when you paste a URL, the full report is the free product, not a preview of a paid one, and nothing about your site is stored after the run.

It's a checker, not a fixer: seo·check marks each check pass, warn, or fail and gives a one-line reason and fix, but it doesn't edit your site for you. That honesty is deliberate: you get a clear, free read on where a page stands and exactly what to change, and you make the change yourself.