A sitemap that was right yesterday may be wrong today.
Sitemapaudit fetches your sitemap, follows its index, and requests every URL it lists. It tells you, in plain language, which ones still answer 200 and which ones have drifted — 404s, redirects, and lastmod values that do not mean what they claim.
URLs that still serve live pages
Pages listed in the sitemap that no longer exist
URLs that now point somewhere else — sometimes to a different host
Dates that are identical across every URL (generator-stamped) or set in the future
Follows one level of sitemap-index recursion to child sitemaps
URLs that redirect to a different host than the sitemap itself
Not a validator
Validators check whether the XML is well-formed, which it almost always is. Sitemapaudit checks for drift — URLs that were correct when the sitemap was generated and are now broken.
Not a crawler
It requests every URL once, on demand. It does not crawl linked pages, follow pagination, or index anything. It answers one question about one sitemap.
Not a monitoring tool
No scheduled checks, no alerts, no email. This is a point-in-time diagnostic. If you need recurring audits, that feature is planned but not yet available.
Paste your sitemap URL into the input on the app page and click Audit. The tool returns a report within seconds.
Example: POST /api/audit { "sitemap_url": "https://example.com/sitemap.xml" }
Cloudflare-blocked hosts. This tool cannot reach websites hosted behind Cloudflare. Those URLs will appear as "blocked" rather than as unreachable.
Point-in-time. Results reflect the state of each URL at the moment of the request and may change if the site is redeployed.
Sitemap-index recursion is one level deep (capped at 20 child sitemaps).