Sitemap FAQs: The Living Vault
A growing collection of focused answers to the sitemap questions that come up most often in technical SEO work. Browse by category, jump to what you need.
A different kind of module
Modules 1 to 4 are a structured course: linear lessons that build on each other, taking you from sitemap foundations through advanced applied scenarios. Module 5 is different. It is a living vault of focused answers to the sitemap questions that come up most often in real work.
Each entry stands on its own. You can read them in any order, link to them as references, and come back when a specific question lands on your desk. The structured course teaches the system; the vault answers the questions.
The vault grows over time. New questions get added as they surface in client work, in community discussions, and in the gaps that real Technical SEO conversations expose. Bookmark this page and check back.
Browse by category
Four categories cover the main themes that sitemap questions cluster around. Pick the one closest to what you are working on.
Indexation and Discovery
2 entriesHow sitemaps interact with Google's discovery process, what the Search Console numbers actually mean, and how long crawling really takes.
Why does Search Console show fewer URLs than my sitemap submitted?
A common worry that is usually nothing to worry about. The gap between submitted and indexed URLs is normal; what matters is the size of the gap and the pattern behind it.
How long does it take Google to crawl URLs from my sitemap?
Submitting a sitemap does not trigger immediate crawling. Realistic timelines, what affects them, and what you can actually do to speed up discovery.
Sitemap Architecture
2 entriesHow sitemap files are structured, when to split into multiple files, and how index files fit into the bigger picture.
Can I have multiple sitemap.xml files at the root?
Yes, you can have multiple sitemap files at the root, but a sitemap index is almost always the cleaner pattern. When each applies and how to structure them.
What is the difference between sitemap.xml and sitemap_index.xml?
Two different files with two different jobs. sitemap.xml lists URLs; sitemap_index.xml lists other sitemap files. When each applies and how they fit together.
When to Use Sitemaps
1 entryWhether sitemaps apply to your specific situation, including the edge cases where the answer is less obvious than it first appears.
Metadata and Maintenance
2 entriesThe signals inside the sitemap, what Google actually pays attention to, and how to handle ongoing sitemap maintenance without damaging crawler trust.
Does Google use the priority and changefreq tags in my sitemap?
Google has confirmed publicly that it ignores both priority and changefreq. What it actually pays attention to, why these tags exist at all, and whether you should keep them in your sitemap.
How often should I update my sitemap?
The honest answer: whenever your content changes meaningfully. Not on a schedule, not every hour, not arbitrarily. Why automation is the right approach and what damages lastmod trust.