Sitemap Splitter & Merger

Split a sitemap that's over the 50,000 URL limit into smaller files, or merge several sitemaps into one. Real fetching and parsing, not just a file upload gimmick.

Why use our Sitemap Splitter & Merger

Split at the real protocol limit

50,000 URLs per file is the actual sitemap protocol limit, this splits large sitemaps into correctly sized, valid files.

Merge with automatic deduplication

Combining sitemaps that share URLs, common after a partial migration, removes duplicates instead of just concatenating them.

Real fetching, correct XML out

Fetches and parses your actual sitemap content, output files use correct sitemap protocol syntax.

Free, no signup

Split or merge instantly, no account required.

Sitemap URL *

URLs per file

Real Sitemap Splitter & Merger example: before vs. after

A large e-commerce site whose product sitemap had grown past the 50,000 URL protocol limit.

Before · Before

62,000

URLs, one file

Over the protocol limit, some crawlers and validators reject or truncate a sitemap like this.

After · After splitting

Valid files

Two files under the limit, referenced by a single sitemap index.

Frequently Asked Questions

How many URLs should I put in each split file?

Anything under 50,000 is valid. 5,000 to 10,000 per file is a common practical choice, small enough to process quickly, large enough to avoid too many files.

After splitting, how do search engines find all the pieces?

Submit them together using a sitemap index file, our Sitemap Index Generator builds one from the split file URLs once you've uploaded them.

Does merging remove duplicate URLs automatically?

Yes, if the same URL appears in more than one sitemap you're merging, it's included only once in the output.

Is there a limit on how many sitemaps I can merge at once?

Merging is capped at 20 sitemap URLs per request.

Generate the index file for your split sitemaps

Once your files are split, combine them under one sitemap index with our free generator.

Try Sitemap Index Generator