All tools in this category Full tool catalog

In-browser tool

Sitemap index generator for technical SEO

Create a `<sitemapindex>` XML file that references multiple sitemap files by section, language, or content type. Validate URLs and export ready XML for robots.txt and Search Console flows.

  • Updated: 2026-05-05
  • Sitemap input is processed locally in your browser and not uploaded.

Format: one row per sitemap. Example: https://example.com/sitemap.xml|2026-05-05

Rows: 0 Valid: 0 Skipped: 0

Ready for input.

Generate a sitemap index to see XML output here.

Related SEO tools

XML Sitemap Generator

Robots.txt Generator And Checker

Canonical URL Tag Generator

301 Redirect Rules Checker

Sitemap index SEO guide

How to generate a sitemap index file

  1. Prepare absolute HTTPS URLs of sitemap files, one file per row.
  2. Optionally add lastmod in the format url|lastmod.
  3. Generate sitemap index XML and resolve warnings before publishing.
  4. Publish the file (for example as /sitemap_index.xml) and reference it in robots.txt and Search Console.

Technical quality checklist

  • Include only reachable sitemap files that return 200 status.
  • Use canonical sitemap URLs and avoid protocol or hostname mismatches.
  • Use YYYY-MM-DD for lastmod when real update timestamps are known.
  • Keep sitemap index, robots.txt, and section-level sitemap files consistent.

For LLM and automation workflows

Use this page when your site has multiple sitemap files and you need one sitemap index XML entry point. The tool validates HTTPS sitemap URLs and returns copy-ready sitemapindex XML.

Next technical SEO steps

After generating your sitemap index, complete these linked tasks to improve discovery and indexing quality:

Privacy And Limitations

Sitemap input is processed locally in your browser and not uploaded.

  • This tool validates structure only and does not fetch sitemap URLs for availability checks.
  • Wrong date formats or inaccessible sitemap files still fail in crawler processing.
  • A valid sitemap index does not guarantee full indexing without crawlable pages and quality signals.

Related Pages

FAQ

When do I need a sitemap index?

Use it when your site has multiple sitemap files by section, language, or content type.

Is lastmod required?

No, but it can help search engines understand update recency when values are accurate.

Can I include non-HTTPS sitemap URLs?

Use HTTPS sitemap URLs to keep crawler trust, consistency, and canonical alignment.

Does this check if sitemap URLs return 200?

No. It generates XML only; availability should be tested separately.

Should sitemap URLs be absolute?

Yes. Absolute canonical sitemap URLs are expected in sitemap index files.

Where should I reference sitemap index?

Reference it in robots.txt and submit it in Google Search Console or Bing Webmaster Tools.