Who builds this, and why it is free

What this site is

SEO Analysis Checker runs a single-page SEO and AI-visibility audit on any URL in about ten seconds. You paste a URL, the report streams in check by check, and you get a ranked list of fixes with the exact code or CMS steps to apply them. There is no account, no email gate and no “unlock the full report” button. The report you see is the whole report.

Who is behind it

It is built and operated by the team behind deepseoanalysis.com, a full-site SEO audit platform that crawls up to 1,000 pages, tracks keywords and monitors sites weekly. The checker uses the same audit engine as the full platform, trimmed to the checks that make sense for one page and tuned to finish inside a twelve-second budget. When a check here flags something, it is the same logic that flags it in a paid, thousand-page crawl.

We are a small team, not a content operation. Every explainer under /learn/checks documents a check that actually exists in the engine, and every free tool under /tools is something we needed ourselves first.

Why it is free and ungated

Most free SEO checkers hide the useful part behind an email form and then sell you the findings. We think a single-page check should be as free as viewing source. The business model is simple and stated on every report: if one page was useful, the whole-site version lives at deepseoanalysis.com. Nothing on this site depends on you clicking that link.

How we score

Scores are deterministic and documented. Each check has a severity weight, each category has a weight in the overall score, and the “fix these first” list is ordered by the product of the two. The full formula, the category weights and the six factors behind the AI-visibility score are on the methodology page.

What we deliberately do not do

• No email required to see a report, and no partial reports.
• No advertising trackers or third-party analytics pixels. See the privacy policy.
• No made-up numbers. A check either measures something on your page or it does not run.
• No indexing of your report. Report pages carry noindex, so checking a site never creates a public search result about it.

Our crawler

Reports are generated by SEOCheckerBot, which identifies itself in the user-agent string. Each check fetches the URL you submit plus the site’s robots.txt, sitemap and llms.txt, and makes a few probe requests (a deliberately missing URL, the http:// and www variants) to test redirects and 404 handling. It never crawls beyond the page you asked for.

Contact and corrections

Found a check that is wrong, a fix guide that does not match the current CMS interface, or a report you want removed? Reach the operator through deepseoanalysis.com. We fix incorrect checks in the engine, not with a disclaimer.