What the robots.txt check shows
robots.txt tells crawlers which paths they may fetch. The tool downloads the file and shows the HTTP status, Sitemap lines, Allow and Disallow counts, and the raw text. A mistaken Disallow: / removes the whole site from crawling. A missing file means crawlers may fetch every path, which is not automatically an error.
- Hiding an admin panel in robots is not protection. The panel needs a password. robots.txt advertises the path.
- A Sitemap line tells crawlers where the map is. Missing it slows discovery. It does not by itself drop rankings.
- Do not confuse Googlebot with AdsBot. Blocking the ads crawler affects campaigns.
- After an edit, also test the file in Search Console. This tool reads the live file.