Tools
Check a page’s canonical URL tag, and whether it matches the URL you requested.
Look up A, AAAA, MX, TXT, NS, CNAME and SOA records for any domain.
Generate a full favicon set (16×16 to 512×512, plus the HTML to paste) from any image — computed locally in your browser.
Check a page’s heading structure (H1-H6) in document order, and catch common issues like a missing or duplicate H1.
Check the HTTP response headers any URL sends back — server, caching, security headers, and more.
Look up the approximate location and network details of any IP address, or your own.
See the most frequent words and phrases in a page’s visible text, with their density.
Check a page’s title, meta description, robots directive, canonical URL, and other key SEO meta tags.
Check a page’s Open Graph tags and preview how it will look when shared on Facebook, LinkedIn, and similar platforms.
Check the size of a page’s raw HTML document, and whether it’s served compressed.