Sitemap Validator

A sitemap helps search engines find and understand your website’s pages. But if your sitemap has errors, broken links, or invalid entries, it can hurt your ranking. Our free Sitemap Validator checks every URL in your XML sitemap and gives you a clear report. You don’t need to sign up or log in. Just paste your sitemap URL and get results in seconds.

What Does This Sitemap Validator Tool Do?

This tool reads your sitemap and validates it against the official sitemap protocol. It checks whether the XML is well formed and whether each entry follows the rules. It also tests every URL to see if it returns a working HTTP status. You get a summary of total URLs, valid ones, broken ones, and any warnings. The report also shows a detailed table with each URL, its status code, and the last modification date.

Many sitemap checkers only look at the XML syntax. This one goes further. It follows sitemap indexes, so you can validate large, nested sitemaps without extra work. It also flags common issues like missing lastmod, invalid priority values, or wrong changefreq. This makes it more thorough than most free tools.

Key Features

• Validates both simple sitemaps and sitemap index files
• Recursively processes nested sitemaps up to two levels deep
• Checks each URL with a HEAD request to confirm it is reachable
• Detects XML parsing errors with line‑specific messages
• Verifies all required and optional tags like loc, lastmod, priority, and changefreq
• Shows a clear summary with total, valid, broken, and warning counts
• Displays a full URL table with status codes and lastmod values
• Works without registration or login

How to Use the Sitemap Validator

Using the tool is straightforward. Follow these steps.

Step 1: Go to the Sitemap Validator page on AntiSpywares.net.:

Step 2: Copy the full URL of your sitemap. This can be a standard XML sitemap or a sitemap index.

Step 3: Paste that URL into the input field.

Step 4: Click the Validate button.

Step 5: Wait a few seconds while the tool fetches and analyses your sitemap.

Step 6: Review the report. It shows summary cards, a list of errors and warnings, and a detailed table of all URLs.

If you have a large sitemap with many pages, the process may take a little longer. But the tool is optimised to handle thousands of URLs without timing out.

Frequently Asked Questions

What is a sitemap validator and why do I need one?

A sitemap validator is a tool that checks your XML sitemap for errors. It verifies that the file follows the sitemap protocol, that all required tags are present, and that every URL returns a working HTTP status. You need one to ensure search engines can crawl your pages properly. A broken sitemap can lead to missing pages in search results.

What file types does this sitemap validator support?

It supports XML sitemaps and sitemap indexes. It does not support text sitemaps or RSS/Atom feeds. The tool expects a valid XML file with a root element of or .

How many URLs can the validator check at once?

The default limit is 5,000 URLs. This prevents server timeouts while still covering most websites. If you have more than that, the tool will process the first 5,000 and show a warning.

What does it mean when a URL is marked as broken?

A broken URL is one that returns an HTTP status code outside the 200‑399 range. This includes 404 Not Found, 500 Internal Server Error, and redirect chains that do not resolve. The tool shows the exact status code so you can investigate further.

Can I validate a sitemap that requires authentication?

No, the tool only works with publicly accessible sitemaps. If your sitemap is behind a login or firewall, you will need to make it public or use a local validator.

How do I fix the warnings about lastmod format?

The sitemap protocol expects lastmod in ISO 8601 format, for example 2026-08-11 or 2026-08-11T14:30:00Z. If your dates do not match that format, the tool will show a warning. Update your sitemap generator to output the correct format.

Why does the tool show a warning about priority values?

Priority must be a number between 0.0 and 1.0. If you have values outside this range, or if you use text instead of a number, the tool flags it. You can either correct these values or remove the priority tag altogether, as it is optional.

Is there a limit on the size of the sitemap file?

The tool uses WordPress HTTP requests, which have a default timeout of 30 seconds. Very large files may not download completely. If you experience timeouts, try splitting your sitemap into smaller chunks or use a sitemap index.

Does this tool store my sitemap data?

No, we do not store any sitemap data. The tool only processes the sitemap in real time and displays the results. We do not log or save any URLs you submit.

Can I use this tool for multiple sitemaps?

Yes, you can validate as many sitemaps as you want. There is no daily limit. Just paste a new URL and click Validate again.

This sitemap validator is designed to give you confidence that your sitemap is working correctly. Use it regularly after you update your site or before you submit your sitemap to search engines. If you find errors, fix them and re‑validate to confirm everything is resolved. A healthy sitemap is a small but important step toward better search visibility.

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Disclaimer: Results from this tool are provided for informational purposes only. While we strive for accuracy, we cannot guarantee that every result is complete or error-free. Always verify important findings using additional methods before making security, technical, or business decisions.