Quick answer
Over 50,000 URLs or 50MB? Use multiple sitemaps and a sitemap index.
Sitemap Split Required
Over 50,000 URLs or 50MB? Use multiple sitemaps and a sitemap index.
Common causes
- One huge file.
- No index.
How to fix
- Create sitemap1.xml, sitemap2.xml, ...
- Create sitemap_index.xml listing them.
FAQ
- When split?
- Over 50k URLs or 50MB.
- Index?
- List all sitemap URLs.
Fix it now
Try in validator (prefill this example)