Do I need to register or pay?

No. The Sitemap Checker is free, with no signup. You can scan up to 500 pages per run, which covers most small and mid-sized sites. Larger sites will hit the limit, and we may add a paid tier later — but the free version is intentionally generous.

Can the scanner handle sitemap index files?

Yes. If your sitemap.xml is actually an index that links to other sitemaps (sitemap-posts.xml, sitemap-pages.xml and so on), the scanner follows them automatically and combines every URL into one report.

What if my sitemap is gzipped (.xml.gz)?

The scanner detects and decompresses .gz sitemaps on the fly. You don't need to unpack anything manually.

Are my scan results stored anywhere?

No. The whole scan runs in your browser, results live only in your current session, and a page refresh clears them. If you want a permanent record, hit "Export to CSV" before closing the tab.

Why does a large sitemap sometimes scan slowly?

We deliberately cap concurrency at five requests in flight at a time. This protects your origin server from a sudden burst, and it keeps the scanner well behaved as a crawler. On a slow site, that means the total run takes longer — but it never overwhelms your server.

Sitemap SEO & H1 Auditor

Scan any website's sitemap to detect missing, duplicate, or empty H1 tags across all pages.

Sitemap Scanner

Provide the URL to a valid sitemap.xml or scan a single page.

Analysis Results

Heading structure and semantic errors per page. Expand a row to see its heading tree.

URL ↑	Headings	Errors
No results to display yet. Enter a sitemap and start analysis.

What this scanner checks

The Sitemap Checker pulls every URL listed in your sitemap.xml — including nested sitemap-index files and gzipped .xml.gz sitemaps — and then visits each page to inspect its on-page SEO basics. For every URL we report the H1–H6 heading structure, the title and meta description, the canonical tag, the HTTP status code, and how fast the server responds (TTFB).

You can scan up to 500 pages in one run, completely free, with no signup. Everything runs in your browser, so the analysis stays private — we don't keep your data on our servers.

Common issues this scanner finds

These are the problems that show up most often when you audit a real-world sitemap:

Missing or duplicate H1. A page should have exactly one H1 that summarises its content. Pages without an H1, or with several competing H1s, confuse both readers and search engines. To find the same H1 reused across different pages, use the duplicate content & cannibalization checker.
Skipped heading levels. Jumping from H1 straight to H3 (or H2 to H4) breaks the document outline — accessibility tools and Google both rely on a clean hierarchy. Every skip is flagged.
Over-long titles and descriptions. Titles over 60 characters and descriptions over 160 get truncated in search results. We measure both lengths so you know exactly what to trim.
Redirect chains in your sitemap. URLs that return 301 or 302 instead of 200 waste crawl budget. The scanner surfaces the real status code for every page so you can clean them up.
Pages blocked by robots. A noindex or nofollow meta tag on a page in your sitemap is almost always a mistake — we flag those automatically.
Slow time-to-first-byte. Pages that take more than a second to respond bleed organic traffic. TTFB is measured on every URL, with a colour-coded threshold so the worst offenders jump out.

Sitemap scanner FAQ

: No. The Sitemap Checker is free, with no signup. You can scan up to 500 pages per run, which covers most small and mid-sized sites. Larger sites will hit the limit, and we may add a paid tier later — but the free version is intentionally generous.
: Yes. If your sitemap.xml is actually an index that links to other sitemaps (sitemap-posts.xml, sitemap-pages.xml and so on), the scanner follows them automatically and combines every URL into one report.
: The scanner detects and decompresses .gz sitemaps on the fly. You don't need to unpack anything manually.
: No. The whole scan runs in your browser, results live only in your current session, and a page refresh clears them. If you want a permanent record, hit "Export to CSV" before closing the tab.
: We deliberately cap concurrency at five requests in flight at a time. This protects your origin server from a sudden burst, and it keeps the scanner well behaved as a crawler. On a slow site, that means the total run takes longer — but it never overwhelms your server.

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