Free survey
Starting surveyrobots.txt, then XML sitemaps, then a live page sample. Typical scans finish in 8–40 seconds.
Critical
A sitemap URL returned an error or could not be loaded.
Search engines treat sitemaps as hints. If the file is down, newly added URLs may be discovered later — or not at all.
https://example.com/sitemap.xml returns HTTP 404.
Sitemapper requests each discovered sitemap and records non-success responses.
curl -I the sitemap URL. Check robots.txt Sitemap: lines.
Restore the sitemap at a stable URL and keep robots.txt in sync.
Sitemapper