These need no account.
- Index checker: what stands between a page and Google's index, from robots.txt and noindex to its status code and canonical. Signed in, it shows Google's own answer for pages on a site you have connected.
- Coverage report: a whole sitemap checked against robots.txt, with a sample of its pages fetched and counted: errors, noindex, blocked pages, redirects, and pages missing from the sitemap.
- On-page checker: one page's title, description, headings, canonical, language, images and structured data, each with what it means.
- SERP snippet preview: how a title and description look in results, measured in pixels the way Google shortens them.
Limits
- The checkers allow 30 checks a day from one connection.
- The coverage report allows 5 reports a day from one connection. A site already checked in the last day shows that report rather than checking again.
- A coverage report is shared by its link, is not listed in search engines, and is deleted after 90 days.
The free checks look at a page from outside. Connecting Search Console shows what Google itself knows; see Setting up your site.