Free SEO Tool
Free Sitemap Checker & Validator
Find, validate, and audit any sitemap — XML, sitemap index, or image/video sitemaps. Check for malformed URLs, missing lastmod dates, blocked pages, and non-canonical entries. Bonus: flag whether your sitemap is AI-crawler friendly. Free, unlimited, no signup.
What is it?
What is a sitemap checker?
A sitemap checker fetches your XML sitemap (or sitemap index), parses every URL and metadata entry, and validates it against the sitemap protocol: well-formed XML, correct namespaces, valid lastmod dates, supported priority/changefreq values, and URL format compliance. It also cross-checks against your robots.txt, flags non-canonical URLs, blocked pages, redirect chains, and 404s sitting in the sitemap. Our checker adds an AI-visibility layer: it flags whether your sitemap includes the URLs most likely to surface in AI answers, whether those URLs are accessible to GPTBot and ClaudeBot, and whether a complementary llms.txt file is present — because AI crawlers rely heavily on declared URL lists, much like Google does.
How to use the sitemap checker
Enter your domain (e.g., yoursite.com) and the checker auto-discovers your sitemap at the standard locations (sitemap.xml, sitemap_index.xml, robots.txt reference). Or paste a direct sitemap URL. Within seconds you'll see total URL count, parse errors, non-indexable URLs, 404s, redirect entries, missing lastmod dates, and an AI-crawler access summary. If the sitemap passes all checks, pair with our AI Crawlability Checker to confirm the listed URLs are also accessible to GPTBot/ClaudeBot, and our Google Index Checker to verify they're actually in Google's index.
What is it?
What is a sitemap checker?
A sitemap checker fetches your XML sitemap (or sitemap index), parses every URL and metadata entry, and validates it against the sitemap protocol: well-formed XML, correct namespaces, valid lastmod dates, supported priority/changefreq values, and URL format compliance. It also cross-checks against your robots.txt, flags non-canonical URLs, blocked pages, redirect chains, and 404s sitting in the sitemap. Our checker adds an AI-visibility layer: it flags whether your sitemap includes the URLs most likely to surface in AI answers, whether those URLs are accessible to GPTBot and ClaudeBot, and whether a complementary llms.txt file is present — because AI crawlers rely heavily on declared URL lists, much like Google does.
How to use the sitemap checker
Enter your domain (e.g., yoursite.com) and the checker auto-discovers your sitemap at the standard locations (sitemap.xml, sitemap_index.xml, robots.txt reference). Or paste a direct sitemap URL. Within seconds you'll see total URL count, parse errors, non-indexable URLs, 404s, redirect entries, missing lastmod dates, and an AI-crawler access summary. If the sitemap passes all checks, pair with our AI Crawlability Checker to confirm the listed URLs are also accessible to GPTBot/ClaudeBot, and our Google Index Checker to verify they're actually in Google's index.
Results
What you can do with our free sitemap checker
Audit sitemap health, catch 404s and non-canonical entries, and confirm AI crawlers can parse your declared URL list.
Results
What you can do with our free sitemap checker
Audit sitemap health, catch 404s and non-canonical entries, and confirm AI crawlers can parse your declared URL list.
Find your sitemap fast
Just enter a domain — the checker auto-discovers your sitemap from the usual locations and your robots.txt. Skip the manual detective work on unfamiliar sites.
Find your sitemap fast
Just enter a domain — the checker auto-discovers your sitemap from the usual locations and your robots.txt. Skip the manual detective work on unfamiliar sites.
Catch 404s and redirect chains
Sitemaps that list dead URLs, redirect chains, or non-canonical pages waste crawl budget and confuse Google. Our checker flags every URL that shouldn't be there.
Catch 404s and redirect chains
Sitemaps that list dead URLs, redirect chains, or non-canonical pages waste crawl budget and confuse Google. Our checker flags every URL that shouldn't be there.
Validate XML structure
Malformed namespaces, invalid lastmod dates, unsupported priority values — we validate against the sitemap protocol and flag every spec violation so Google doesn't silently ignore your sitemap.
Validate XML structure
Malformed namespaces, invalid lastmod dates, unsupported priority values — we validate against the sitemap protocol and flag every spec violation so Google doesn't silently ignore your sitemap.
Check AI crawler accessibility
Your XML sitemap may be perfect for Google but blocked for GPTBot and ClaudeBot. We cross-check sitemap URLs against AI-crawler access rules to catch this common gap.
Check AI crawler accessibility
Your XML sitemap may be perfect for Google but blocked for GPTBot and ClaudeBot. We cross-check sitemap URLs against AI-crawler access rules to catch this common gap.
Audit competitor sitemaps
Paste a competitor's sitemap URL and see their full published-URL inventory, priority signals, and update cadence — powerful free intel on their content strategy and site architecture.
Audit competitor sitemaps
Paste a competitor's sitemap URL and see their full published-URL inventory, priority signals, and update cadence — powerful free intel on their content strategy and site architecture.
Prepare for llms.txt
llms.txt is the emerging AI-era sitemap. Our checker reports whether you have one, and lists the XML-sitemap URLs that would make natural llms.txt entries — saving hours of setup.
Prepare for llms.txt
llms.txt is the emerging AI-era sitemap. Our checker reports whether you have one, and lists the XML-sitemap URLs that would make natural llms.txt entries — saving hours of setup.
Free Tools
Try our other free SEO tools
No signup required — use any tool instantly
Free Tools
Try our other free SEO tools
No signup required — use any tool instantly
SERP & Rankings
Technical SEO
AI Writing & Content
Keyword Research
AI Visibility
Social & YouTube
How it Works
How AIclicks works
How it Works
How AIclicks works
01
Brand Audit
We start by mapping your current AI visibility, analyzing how often you appear in LLMs answers. This gives us a precise roadmap of what needs to be fixed, improved, or created.
01
Brand Audit
We start by mapping your current AI visibility, analyzing how often you appear in LLMs answers. This gives us a precise roadmap of what needs to be fixed, improved, or created.
02
AI-Optimized Content
We produce content crafted specifically for AI models. We reinforce this with citation-worthy sources and high-authority mentions that help AI systems trust and reference your brand.
02
AI-Optimized Content
We produce content crafted specifically for AI models. We reinforce this with citation-worthy sources and high-authority mentions that help AI systems trust and reference your brand.
03
Optimization, Tracking & Insights
You get access to a custom AI visibility dashboard, weekly progress updates, and continuous optimization cycles. We monitor ranking shifts, citation changes, competitors, and new AI opportunities.
03
Optimization, Tracking & Insights
You get access to a custom AI visibility dashboard, weekly progress updates, and continuous optimization cycles. We monitor ranking shifts, citation changes, competitors, and new AI opportunities.
Our Insights
Explore our blog
Our Insights
Explore our blog
Our Trackers
Tracker every major LLM
AIclicks covers every major LLM out there
Our Trackers
Tracker every major LLM
AIclicks covers every major LLM out there
FAQ
Where is my sitemap located?
Standard locations are /sitemap.xml, /sitemap_index.xml, or /sitemap.xml.gz at your domain root. It should also be referenced in /robots.txt with a 'Sitemap:' directive. Our checker auto-discovers all of these.
What makes a sitemap invalid?
Most common: malformed XML, wrong namespace (must be http://www.sitemaps.org/schemas/sitemap/0.9), invalid lastmod dates (must be W3C datetime format), URLs >2048 chars, more than 50,000 URLs per file, or total uncompressed size over 50 MB. Our checker flags each violation.
Should I include every URL in my sitemap?
Only canonical, indexable, status-200 URLs. Excluding noindex pages, redirects, 404s, and duplicate variants sharpens crawl focus. Our checker flags every URL in your sitemap that shouldn't be there.
Does my sitemap matter for AI search visibility?
Yes. AI crawlers (GPTBot, ClaudeBot, PerplexityBot) use XML sitemaps as URL discovery feeds, similar to Google. A clean sitemap plus an accessible llms.txt is the fastest path to getting new content into AI indexes. We check both.
Is this sitemap checker really free?
Yes. Unlimited checks, no signup, no credit card. Audit your own sitemap or any competitor's sitemap as often as you like.
FAQ
Where is my sitemap located?
Standard locations are /sitemap.xml, /sitemap_index.xml, or /sitemap.xml.gz at your domain root. It should also be referenced in /robots.txt with a 'Sitemap:' directive. Our checker auto-discovers all of these.
What makes a sitemap invalid?
Most common: malformed XML, wrong namespace (must be http://www.sitemaps.org/schemas/sitemap/0.9), invalid lastmod dates (must be W3C datetime format), URLs >2048 chars, more than 50,000 URLs per file, or total uncompressed size over 50 MB. Our checker flags each violation.
Should I include every URL in my sitemap?
Only canonical, indexable, status-200 URLs. Excluding noindex pages, redirects, 404s, and duplicate variants sharpens crawl focus. Our checker flags every URL in your sitemap that shouldn't be there.
Does my sitemap matter for AI search visibility?
Yes. AI crawlers (GPTBot, ClaudeBot, PerplexityBot) use XML sitemaps as URL discovery feeds, similar to Google. A clean sitemap plus an accessible llms.txt is the fastest path to getting new content into AI indexes. We check both.
Is this sitemap checker really free?
Yes. Unlimited checks, no signup, no credit card. Audit your own sitemap or any competitor's sitemap as often as you like.
Be the #1 Response in AI
Reach millions of consumers who are using AI to discover new products and brands
Be the #1 Response in AI
Reach millions of consumers who are using AI to discover new products and brands
Be the #1 Response in AI
Reach millions of consumers who are using AI to discover new products and brands