Quickly validate HTML, CSS, and XHTML with built in validators from a number of third party resources. Check domain stats, know your web links, Page Rank, traffic details, back-links, indexed pages, domain age, keyword density, trend report, link popularity, search engine spam and analyze meta tags from the SEO tools. Social Services can be checked in terms of URL history, website review, related blog links, bookmarks, and articles. Moving on web proxies can be determined. Whois, ping test, HTTP request, trace route, server status and info, DNS report, DNS look-up, speed test and report are some of the useful tools found under network category.
Give Test Everything a try and check the validity of web projects in every way. Thumbs up to the developer Jonas John for the creation of this free online tool. A great help for developers and saves tons of time.
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There are a number of online HTML validators available based on the needs; browser or as web apps. Have a look at this list of HTML validators