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Domain & WebsiteWHOIS / RDAP lookup
Open ICANN registration data lookup for a domain.
Open whois / rdap lookup21 FREE TOOLS · NO MEMBERSHIP
Free domain & website tools
Inspect domain records, review website markup, prepare sitemaps, and open specialist performance and SSL reports. Each tool explains what it checks and what it cannot verify.
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Domain & WebsiteDNS A / AAAA lookup
Look up public IPv4 and IPv6 records using Google Public DNS.
Open dns a / aaaa lookupFREE TOOL
Domain & WebsiteMail exchange lookup
Inspect public MX records used to route incoming email.
Open mail exchange lookupFREE TOOL
Domain & WebsiteNameserver lookup
Find the public nameservers for a domain.
Open nameserver lookupFREE TOOL
Domain & WebsiteTXT record lookup
Read public TXT records for a domain.
Open txt record lookupFREE TOOL
Domain & WebsiteSPF record checker
Find SPF policy records in public DNS.
Open spf record checkerFREE TOOL
Domain & WebsiteDMARC record checker
Read the published DMARC policy for a domain.
Open dmarc record checkerFREE TOOL
Domain & WebsiteSSL / TLS test
Prepare an external SSL Labs server assessment.
Open ssl / tls testFREE TOOL
Domain & WebsitePageSpeed Insights
Open Google’s performance and Core Web Vitals report.
Open pagespeed insightsFREE TOOL
Domain & WebsiteHTML SEO checker
Inspect pasted page HTML for title, description, canonical, and headings.
Open html seo checkerFREE TOOL
Domain & WebsiteSitemap XML checker
Validate pasted sitemap XML and check URL formatting.
Open sitemap xml checkerFREE TOOL
Domain & WebsiteXML sitemap generator
Generate an XML sitemap from your page URLs.
Open xml sitemap generatorFREE TOOL
Domain & WebsiteRobots.txt generator
Create a robots.txt file with a sitemap reference.
Open robots.txt generatorFREE TOOL
Domain & WebsiteRobots.txt inspector
Inspect pasted robots.txt directives and broad blocking rules.
Open robots.txt inspectorFREE TOOL
Domain & WebsiteSearch snippet preview
Preview a search title and description with character counts.
Open search snippet previewFREE TOOL
Domain & WebsiteSocial meta tag generator
Build Open Graph and social sharing meta tags.
Open social meta tag generatorFREE TOOL
Domain & WebsiteHeading structure checker
Inspect the heading order in pasted HTML.
Open heading structure checkerFREE TOOL
Domain & WebsiteImage alt text checker
Find images without alt attributes in pasted HTML.
Open image alt text checkerFREE TOOL
Domain & WebsiteURL inspector
Break a URL into its hostname, path, and query parameters.
Open url inspectorFREE TOOL
Domain & WebsiteKeyword usage checker
Count exact phrase matches and review word usage.
Open keyword usage checkerFREE TOOL
Domain & WebsiteWebsite SEO Audit
Enter a public website URL for a live on-page SEO report with prioritised fixes and a small internal-link sample.
Open website seo auditUnderstand your domain and your pages
Start with DNS and registration information when troubleshooting a domain. Check website content separately: headings, image descriptions, and search snippets help people understand the page. Sitemaps and robots.txt guide discovery, while PageSpeed and SSL reports examine other parts of the website experience.
Read our practical marketing and website guides