Free SEO site checker

It starts at the home page and follows the site’s own links, as a search engine’s crawler does, up to 25 pages. It reads robots.txt first and leaves alone what robots.txt closes to it. Each page is checked for crawlability, indexation, on-page, content, structured data, links, performance and ai readiness: 67 checks in all, each with a page of its own that says what it looks at and how to fix it (every check we run).

• A grade from 0 to 100 for the pages read, made the way the full audit makes it.
• The problems, each counted once. A missing title on twenty pages is one problem on twenty pages, not twenty problems, sorted into critical, warnings and notices.
• The first 5, in the order worth fixing, with how many pages each one covers and a link to what it is.
• The AI assistants robots.txt keeps out: if ChatGPT, Claude or Perplexity cannot read the home page for their answers, the result says so.
• A link to the result, which opens it again for 30 days, to send to whoever looks after the site.

The checker is a first look. The full audit, free in an account, reads up to 200 pages, opens the ones that only show their content with JavaScript in a browser, lists every problem with the pages it covers and the fix, and compares each audit with the one before. Connect Search Console and it also orders the work by the clicks at stake. It appears in the account usually within the hour, by the next working day at the latest: create an account, or see an example report.

• Where you rank. It reads the site; it does not look at Google’s results, search volumes or backlinks. For links, the domain authority checker gives a site’s Link Authority.
• The pages past the first 25. A problem that only shows deeper in the site waits for the full audit.
• What JavaScript draws. The checker reads the HTML the server sends, as many crawlers do; text that only appears after scripts run is reported as missing from it.
• A site that refuses crawlers. If the site blocks our crawler, the result says it could not read it rather than giving it a grade (our crawler, and how to let it in).

To keep it free for everyone, one connection can check 6 sites a day, and a site checked in the last day is answered from that check.

For a single question there are smaller tools: the robots.txt validator, the title and meta description checker and the structured data checker.