PageRank Checker
Check the Open PageRank score (0 to 10) of up to 10 domains at once (100 with PRO) and compare your site with competitors.
Site checks
Test a site or one page and get a list of fixes.
No sign-up. Most tools run in your browser; site checkers read a page once and store nothing.
Website SEO Checkup
Paste a page address and get a score out of 100 from about 45 checks: title, description, headings, images, robots.txt, sitemap, favicon, speed, HTTPS, mobile…
Mixed Content Checker
Enter an https page address, or paste its source, and see every file that still loads over http://: images, scripts, style sheets, iframes, fonts, video, forms and CSS url() calls.
Broken Link Checker
Check one page or crawl your whole site on the same host.
SSL Checker
Enter a domain and see if its certificate is valid, how many days it has left, who issued it and which names it covers, including www.
Domain Expiry Checker
Enter one or more domains to read official registry data through RDAP, the successor of WHOIS: registration and expiry dates, days left, last update…
Security Checker
Enter a domain to test HTTPS, the certificate, the http:// to https:// redirect, HSTS and five security headers: Content-Security-Policy…
DOM Size Analyzer
Enter a page address or paste HTML to count the elements in the body, the deepest nesting and the element with the most children, measured against the Lighthouse thresholds.
Web Font Checker
Enter a page address to list every web font it loads, read from the page and up to 8 stylesheets: format, font-display, preload, base64 fonts and fonts from…
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