LogoTools
Runs entirely in your browser - nothing is uploaded

Checks a sitemap.xml file against the sitemaps.org protocol: well-formed XML, a recognized <urlset> or <sitemapindex> root, valid <loc> URLs, correctly formatted <lastmod>/<changefreq>/<priority> values, duplicate entries, and the protocol's 50,000-URL / 50MB-per-file limits. Paste the XML directly or drop in a file.

What it doesn't do

This examines the file's own structure and syntax. It never fetches any of the listed URLs to confirm they resolve. Doing that reliably for a sitemap with thousands of entries would be slow, and plenty of sites block automated URL-by-URL checking the same way they block other automated fetches (the SEO & Meta Tag Analyzer's notes on bot-protection challenges cover why). For link-liveness checking, a dedicated crawler is the right tool.

It also leaves a sitemap index's referenced sitemaps unchecked, on both existence and validity. Only the index file you paste in gets validated.

Frequently asked questions

Does this tool check if my URLs work (return 200)?

No, by design. It validates the XML structure and the protocol's formatting rules, and makes no network request to any URL listed in the sitemap. Checking thousands of live URLs is a crawler's job, well outside a fast client-side structural check.

Is my sitemap uploaded anywhere?

Nothing is uploaded. Parsing and validation both run in your browser using the native XML parser, and nothing is sent to a server.

What's the difference between a sitemap and a sitemap index?

A sitemap (<urlset> root) lists page URLs directly. A sitemap index (<sitemapindex> root) lists other sitemap files instead, which is what you need once a site carries more URLs than fit inside one file's 50,000-URL limit. This tool detects which one you've pasted and validates it accordingly.

Why does it warn about a namespace I didn't add?

The sitemap protocol requires the root <urlset>/<sitemapindex> element to declare xmlns="http://www.sitemaps.org/schemas/sitemap/0.9". Sitemaps generated without it often still work in practice, but search engines' own documentation specifies it, so a missing or wrong namespace comes back as a warning.

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