Sitemap Checker
Fetch sitemap.xml, validate its structure, count URLs and detect broken sitemap indexes.
About Sitemap Checker
Search engines only crawl what they can find, and a broken sitemap or unresolvable index is the fastest way to lose long-tail traffic. This checker fetches your sitemap.xml, walks any nested indexes, validates the XML structure, and reports URL counts so you know your indexable inventory at a glance.
What this tool checks
Sitemap Checker focuses on the following signals from your site's live response:
sitemapmodule in the full audit
Why it matters
Signals covered by Sitemap Checker are the ones attackers, browsers, and search engines look at first. A weak result here means real users are exposed — via downgrade attacks, broken trust warnings, indexing problems, or leaked data — long before anything obvious breaks. Fixing them is usually a config change, not a rewrite, and the impact is immediate.
How to interpret your result
- Pass — the signal meets modern best practice. Keep it monitored; regressions happen after deploys.
- Warn — functional but weaker than recommended. Usually a quick header, DNS, or config tweak away from a full pass.
- Fail — a real risk to users or search visibility. Follow the recommendation shown next to the finding — it's copy-pasteable.
Best practices
- • Re-run after every deploy — configuration drift is the #1 cause of regressions.
- • Compare against a competitor's report to spot easy wins.
- • Wire the public API into CI to gate merges on the score.
- • Fix warns before failures — they're the cheapest to close and pay off compounding gains.
Frequently asked questions
Related guides
Related articles
headers
Why Your Website Needs HSTS in 2026
One header, one config line, and downgrade attacks stop reaching your users. If your site doesn't ship HSTS in 2026, you're leaving free security on the table.
Read
headers
How to Roll Out CSP in Report-Only Mode
CSP is one of the most effective XSS defenses ever shipped — and one of the most feared to deploy. Report-only mode turns a scary launch into a boring one.
Read
dns
DMARC in Plain English
SPF, DKIM, DMARC. Three DNS records, one goal: stop other people from sending email as you. Here is what each one actually does.
Read