Sitemap Comparison Tool
Compare two XML sitemaps side by side. See which URLs were added, which were removed, which stayed, and which pages have a new lastmod date.
- 100% free
- No sign-up
- Runs in your browser
Old sitemap (A)
New sitemap (B)
Catch missing pages before search engines do
When a site moves to a new platform, changes its URL structure or gets a redesign, pages quietly drop out of the sitemap. Comparing the old and new sitemap shows every URL that disappeared, so you can add a redirect or put the page back before rankings and traffic suffer.
How matching works
- Each URL is turned into a key using the options you pick, then the two lists are compared by key.
- Ignoring trailing slashes, protocol and www is the safest default for migrations.
- Turn the protocol option off to confirm every http URL has an https version.
- Query strings always count, because ?page=2 is usually a different page.
Reading the lastmod changes
A changed lastmod date means the site says the page was updated. If every URL changed on the same day, the site probably sets lastmod to the build date, which search engines learn to ignore. Accurate lastmod dates help new content get crawled sooner.
How it works
How to use it
- Step 1
Add both sitemaps
Load the old sitemap on the left and the new one on the right. Each side accepts a URL, pasted XML or an uploaded file.
- Step 2
Choose how to match URLs
Decide whether a trailing slash, http vs https, www or letter case should count as a difference.
- Step 3
Review the changes
Switch between added, removed, unchanged and lastmod changes, then copy or download each list.
FAQs
Frequently asked questions
Answers to common questions about the Sitemap Comparison Tool.
It lists URLs that are only in the new sitemap (added), only in the old one (removed), in both (unchanged), and URLs in both whose lastmod date changed. Each list can be copied or downloaded.
Before and after a site migration, a redesign or a CMS change, to make sure no pages went missing. It is also useful for tracking what a competitor published between two dates, or checking a staging sitemap against production.
They decide when two URLs count as the same page. With them on, https://www.example.com/Page/ and http://example.com/page match. Turn an option off when that difference matters to you, for example when checking that every URL moved from http to https.
Yes. With "Follow child sitemaps" on, each side loads up to 50 child sitemaps and compares all of their URLs together.
Each side is de-duplicated before comparing, using the same matching rules. The tool shows how many duplicates it merged on each side so you can clean them up.
No. Pasted and uploaded sitemaps stay in your browser. Sitemap URLs are fetched through Hypello's server only to get around browser limits, and nothing is kept.
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