Free XML Sitemap Validator

Enter a sitemap URL to check that it is valid XML, count its URLs, see whether entries include lastmod, and surface structural problems before search engines hit them.

Validate Sitemap Get Started Free

Validate an XML sitemap

Enter a sitemap URL (or a domain — we will try /sitemap.xml). NorthDuty fetches it and checks the structure.

Free check. No signup, nothing stored.

How NorthDuty sitemap and SEO monitoring works

Enter a sitemap URL (or a domain — we will try /sitemap.xml). NorthDuty fetches it and checks the structure. Recurring checks are configured inside the NorthDuty app.

Set Up Sitemap And SEO Monitoring

What this sitemap validator reports

A single check confirms the sitemap is well-formed and gives search engines the structure they expect.

Valid XML structure

Confirms a proper <urlset> or <sitemapindex> root and flags pages that returned HTML (a redirect or 404) instead of XML.

URL and entry counts

Counts the <url> entries (or child sitemaps in an index) so you can confirm the sitemap covers what you expect.

lastmod coverage

Reports how many entries include a <lastmod> date, which helps search engines prioritize recrawling changed pages.

Common problems

Surfaces missing <loc> elements, empty sitemaps, and sitemaps over the 50,000-URL limit that should be split.

Why validate your sitemap

A broken sitemap quietly hurts crawling and indexing — search engines just skip what they can't parse.

Confirm search engines can actually read your sitemap
Catch sitemaps that return an HTML error page instead of XML
Verify the URL count matches the pages you expect indexed
Spot missing lastmod dates that slow recrawling of updated pages
Check a sitemap index and the sitemaps it points to

How the sitemap validator works

No signup — paste a URL and get the structure back immediately.

1

Enter a sitemap URL

Provide the full sitemap URL, or just a domain and we will try the standard /sitemap.xml path.

2

We fetch and parse it

NorthDuty retrieves the sitemap and checks the root element, entries, <loc> elements, and lastmod coverage.

3

You get a structure report

See whether it's valid, how many URLs it contains, and a list of any problems — nothing is stored.

4

Keep it healthy automatically

NorthDuty's website health checks include sitemap and SEO fundamentals, so regressions get caught on a schedule.

Go Beyond One-Off Checks

Use the tool preview for a quick answer, then move into recurring monitoring for your most important pages and journeys.

Feature

Website Monitoring

What website monitoring is and how it works: NorthDuty combines default 5-minute health checks, screenshot-based UI diffs, and editable user journey monitoring in one project.

Explore Website Monitoring

Feature

Uptime Monitoring

Monitor uptime every 5 minutes by default with HTTP, SSL, DNS, blank-page detection, broken resources, JavaScript errors, and API call tracking.

Explore Uptime Monitoring

Article

Website Monitoring Checklist

Use this website monitoring checklist to decide which pages, signals, journeys, and alerts your team should monitor first.

Read Website Monitoring Checklist

Pricing

NorthDuty pricing for website monitoring: a free plan through $29/mo Starter, Pro, and Business — covering uptime, visual change detection, and user journeys.

Compare pricing plans

Frequently Asked Questions

Answers about this diagnostic preview and when to move into recurring monitoring.

Is this sitemap validator free?

Yes. The sitemap validator is free and requires no signup. Enter a sitemap URL and you get the structure report immediately.

What does it check?

It confirms the sitemap is valid XML with a <urlset> or <sitemapindex> root, counts entries and <loc> elements, reports lastmod coverage, and flags common problems like HTML error pages, missing <loc>, and oversized sitemaps.

Can I enter just my domain?

Yes. If you enter a domain without a path, the validator tries the standard /sitemap.xml location for that site.

Does this guarantee my pages are indexed?

No tool can guarantee indexing. A valid sitemap helps search engines discover and prioritize your pages, but indexing depends on many other factors.

Call To Action

Start monitoring your website with NorthDuty today.

A valid sitemap today can break on the next deploy. NorthDuty checks sitemap and SEO fundamentals continuously, so problems surface before they cost you crawling.

Get Started Free Explore Features

Start on the free plan — add your base URL and monitoring starts in minutes.