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Sitemap XML Viewer

Paste sitemap XML to inspect URL counts, sitemap indexes, duplicate loc entries, lastmod values, and hreflang alternates.

Examples
Sitemap analysisReady
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How to use

  1. 1Paste a sitemap XML file or a focused sitemap index.
  2. 2Check URL count, duplicate URLs, sitemap index entries, lastmod values, and alternate link counts.
  3. 3Look for local URLs, staging domains, missing locales, and lastmod values that change on every deploy.
  4. 4Fix the generator and re-preview before submitting to search engines.

Common use cases

Sitemap QAhreflang reviewIndexing coverage debuggingMultilingual site launchTechnical SEO reports

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Preview HTML components, email snippets, and landing sections in a script-blocked sandbox.

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Preview CSS linear, radial, conic, and repeating gradients with extracted color stops.

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Preview Base64 image strings and data URLs with MIME type and size analysis.

FAQ

What sitemap problems should I check first?

Duplicate URLs, wrong domains, missing localized alternates, stale or noisy lastmod values, and URLs blocked by robots.txt are the first things to inspect.

Should every deploy update lastmod?

No. lastmod should reflect meaningful content changes. Updating every URL on every deploy can send noisy signals.

Can a sitemap force indexing?

No. It helps discovery. Pages still need crawlable URLs, useful content, canonical consistency, and internal links.

Sitemap XML Viewer previews URL entries, sitemap indexes, duplicate loc values, lastmod quality, and hreflang alternates.

It is useful for multilingual tool sites where hundreds of generated pages can make sitemap mistakes hard to spot by reading XML.

Use it before submitting a sitemap to search engines, after adding batches of tools or blog posts, and when debugging indexing coverage.

Demo: review a multilingual sitemap batch

A tool site can generate many URLs quickly. Sitemap preview helps confirm the batch matches the actual site architecture before search engines discover it.

  • Count URLs by locale and compare with generated routes.
  • Check xhtml:link alternates when hreflang is included in the sitemap.
  • Review lastmod dates for content quality instead of build noise.
<url>
  <loc>https://diagrampreview.com/en/mermaid-preview</loc>
  <lastmod>2026-06-17</lastmod>
  <xhtml:link rel="alternate" hreflang="zh-CN" href="https://diagrampreview.com/zh-CN/mermaid-preview" />
</url>

SEO debugging: what to inspect before index submission

Large multilingual sites need sitemap review beyond “is the XML valid”. The useful questions are whether every canonical URL appears once, whether lastmod is meaningful, and whether locale alternates line up with the live routes.

  • Count URLs by locale to catch missing route generation.
  • Look for duplicated loc values caused by trailing slash or locale redirects.
  • Check lastmod only when it reflects real content changes, not every build.
<url>
  <loc>https://diagrampreview.com/en/mermaid-preview</loc>
  <lastmod>2026-06-18</lastmod>
</url>

Review checklist for Sitemap XML Viewer

Use Sitemap XML Viewer when you need to inspect source content visually before it becomes documentation, a pull request note, an incident write-up, or a handoff artifact. Preview sitemap XML URLs, sitemap indexes, duplicates, lastmod, and hreflang alternates.

Before exporting, check that labels are readable, relationships match the source, generated examples do not contain private data, and the preview still makes sense after you edit the input.

Limits and troubleshooting

If the preview fails, reduce the input to the smallest complete example, confirm the format syntax, and then add sections back one at a time. Many rendering failures come from partial files, indentation mistakes, missing diagram headers, or copied snippets that depend on hidden context.

Treat the preview as a review surface rather than a source of truth. Generated diagrams, converted files, dashboards, and rule examples should be checked before they are used in production documentation or operations.

Example inputs to test

  • Basic sitemap: <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"><url><loc>https://example.com/en</loc><lastmod>2026-06-16</lastmod></url><url><loc>https://example.com/en/tools</loc></u...
  • Hreflang sitemap: <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml"><url><loc>https://example.com/en/jsonpath-tester</loc><xhtml:link rel="altern...
  • Sitemap index: <sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"><sitemap><loc>https://example.com/sitemap-tools.xml</loc></sitemap><sitemap><loc>https://example.com/sitemap-blog....

Tool maturity

Basic parser

Basic parser

This tool focuses on fast structure inspection. Use it for review and debugging, then verify critical output before production use.

The maturity label is not a quality score. It tells visitors whether the tool is best for stable export, deeper debugging, quick parsing, or AI-assisted generation.