Open your sitemap (usually yoursite.com/sitemap.xml), copy it and paste it here, or upload the file. The checker validates the XML and every URL in it, then compares it with a list of pages you expect and with your robots.txt, so you can see what is missing, what should not be there and what conflicts. It does not visit your website: browsers block one site from reading another, so it checks what you paste. Everything runs in your browser. Nothing you type is sent to We.Inc or anyone else, and it is gone when you close the tab.
Two kinds of mistakes matter. Missing pages are real pages you want found that the sitemap leaves out, often new service pages or blog posts added after the sitemap was made. Unwanted pages are addresses that should not be there at all: redirects, test pages, filtered versions of the same page, or pages marked noindex.
Comparing the sitemap with a list you trust, such as the links in your menu and footer, is the quickest way to find both. This checker keeps them in separate lists so you can fix one at a time.
Everything here is based on the text you paste. It can prove that the XML is valid and that the URLs are well formed, consistent and allowed by your robots.txt. It cannot see whether each page currently answers 200 or carries a noindex tag, because that needs a visit to each page. The report labels those as not checked rather than guessing.
No. A web page cannot read another website's files because browsers block it, and we do not run a hidden crawler. You paste the sitemap, the page list and robots.txt, and the checks run on that text. The report says exactly how many URLs it checked.
Run curl -sIL followed by the page address in a terminal to see its status code and redirects. To see the canonical and robots meta tag, run curl -sL followed by the address and look for rel="canonical" and name="robots" in the output. Search Console's page indexing report shows the same evidence for your whole site.
One sitemap file can hold up to 50,000 URLs and be up to 50 MB uncompressed. Larger sites split their URLs across several sitemaps listed in a sitemap index file.
A sitemap should list the final addresses on the same site where the sitemap lives. http addresses on an https site redirect, and URLs on another host are ignored by search engines unless you have verified cross-site submission.
No. A sitemap helps search engines find pages; it does not make them index or rank those pages. Quality, links and technical signals still decide that.
No. The check runs in your browser and nothing is sent anywhere.
Related: XML Sitemap Generator, Robots.txt Generator, Redirect Checker, Website Checker, Website builder.
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