This site can scan your website for SEO issues like Title Tag, Meta Description, Meta Keywords, headings, google preview, alt attribute, keyword consistency, HTML ratio, Gzip compression, www resolve, XML sitemap, robots.txt, URL rewrite, underscores in the URL, embedded objects, iframe, domain registration, who is data, indexed pages, backlinks, usability, favicon, custom 404 page, page size, load time, page speed insights, languages, email privacy, safe browsing, mobile friendliness, mobile compability, technologies, speed tips, analytics, W3C validity, Doc Type, encoding, social data, link analysis, broken links, etc.