CheckSEO

The new page looks great in the browser, yet Google lists it under a title nobody has used since the last redesign. To show what search engines read on a page, CheckSEO works from the public code alone, so it needs no login or access to the site. You paste an address, and each tool reports on one part of the page, like the meta tags or the alt text written for images.

The Full Site Audit runs 33 of these checks on one address and averages them into a score, with a card of issues per check. Twenty-four results appear at once, and nine more unlock after you enter an email address. Those include domain age and a speed test from Google's PageSpeed Insights. A separate Site Report covers sites of up to 1,000 pages, which the site promises by email within 24 hours.

Robots.txt is a small file that tells crawlers which parts of a site they may read. The AI Crawler Access Checker reads it for 16 bots, including OpenAI's GPTBot and Common Crawl's CCBot, and names the line that decides each one. It reads only the rules, so blocks set by a firewall or CDN stay out of view. Outside SEO, the collection holds 16 YouTube tools and 15 developer utilities.