Sitemap Cohort Auditor ↗
Technical SEO teams and developers validating sitemap changes before and after a release.
Sitemap Cohort Auditor reads sitemap indexes and compares exact URL sets between releases. It helps identify missing URLs, duplicates and metadata problems before a sitemap change goes unnoticed.
- Start here
- Start with the tested v0.2.2 release and Node.js 20 or newer. Compare two saved XML files and export JSON. That release also documents HTTPS inputs; check the version-specific README before adapting the command.
- Keep in mind
- It checks sitemap declarations without visiting every listed page. Results do not confirm canonical tags, indexing, rankings or traffic.
- Free or paid?
- Free, open-source software under the MIT license. Runs locally without an account or API key.
Official sources: Tested v0.2.2 release and setup ↗ · Sitemap audit guide ↗
Checked . Product and pricing notes are based on official documentation. Our separate test is documented below.
Our test · Sitemap Cohort Auditor v0.2.2
- Input
- before.xml and after.xml from the same fixture, with JSON output and URL-set comparison.
- Observed result
- Read 6 entries representing 5 unique URLs. Found 1 duplicated URL and 1 invalid lastmod; the comparison showed 3 additions and 1 removal.
- Limit
- It does not fetch listed pages, so the declared 404 and noindex URLs need a separate crawl. The test is pinned to v0.2.2; later interfaces may differ.



