robots.txt & XML Sitemap Analyzer
Paste robots.txt and sitemap XML to spot crawl blockers, structural issues, and SEO hygiene problems—with clear explanations.
Crawl files are infrastructure—not afterthoughts
robots.txt and XML sitemaps tell search engines what they may crawl and which URLs you consider important. A single Disallow: / typo during a migration can deindex an entire domain. Sitemaps with broken XML, http URLs, or runaway duplicates waste crawl budget and delay new content discovery.
Cavecrack's analyzer parses both files locally and translates technical findings into plain English. Review staging robots rules before cutover. Validate sitemap exports from your CMS or static generator. Share results with engineering and SEO in the same language—no curl commands required.
When to use this tool
Site migrations and subdomain launches. Post-acquisition domain consolidations. Headless replatforms where sitemaps are generated dynamically. Quarterly SEO hygiene reviews. If your digital strategy includes organic growth, crawl health belongs on the same dashboard as conversion metrics.
How to use it
- Paste your robots.txt contents into the first panel.
- Paste sitemap XML (urlset) into the second panel.
- Run analysis and prioritize errors before warnings.
- Deploy fixes, then verify in Google Search Console after go-live.
Limitations
This tool does not simulate Googlebot behavior, check response headers, or validate sitemap index files recursively. It does not confirm that listed URLs return 200 status codes. Use Search Console and server logs for post-deploy verification.
robots.txt patterns worth double-checking
Wildcard user-agent rules apply broadly—test changes on staging before production. Blocking /wp-admin/ or /api/ is common; accidentally blocking /blog/ or query-parameter variants is not. Sitemap directives should use absolute HTTPS URLs and point to the canonical host after migrations. If you maintain separate marketing and app subdomains, each property may need its own robots file and sitemap strategy.
Technical SEO is a pillar of sustainable organic growth. When crawl issues stem from platform architecture—not typos—Cavecrack's digital strategy team can map migration sequencing and measurement. Reach out for help untangling multi-brand or international setups.
Frequently asked questions
- Does this fetch my live robots.txt or sitemap?
- No. Paste the files you want to review. This avoids CORS limits and lets you analyze drafts before they go live.
- Will Google obey everything in robots.txt?
- Well-behaved crawlers respect robots.txt, but it is not a security mechanism. Blocked URLs may still appear if linked externally. Use noindex for removal intent.
- How large can my sitemap be?
- The sitemap protocol allows up to 50,000 URLs or 50 MB uncompressed per file. Larger sites should use a sitemap index pointing to multiple files.
- Should lastmod dates be included?
- They are optional but helpful when accurate. Avoid bulk-updating lastmod without real content changes—search engines may learn to distrust stale signals.
- Can robots.txt block pages from ranking?
- Disallow prevents crawling, not indexing in all cases. If blocked URLs have external links, they may still appear in results without snippets. Use noindex on the page itself when you want URLs out of the index.
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Need hands-on help?
Cavecrack partners with marketing and engineering teams on web development, digital strategy, and long-term platform health.