Use APKPure App
Get HTML Validator old version APK for Android
App that checks the HTML markup validity of websites.
This app will check HTML markup validity of any website you want. Just enter the URL of the website, press Go and analyze results. For free!
App uses official W3C Markup validator through its web service API and displays all informations, warnings and errors found in HTML markup of the website. For each category it displays message, position in source code where the info/warning/error occured (if any), source code (if any) and in some cases also the explanation of message.
App also supports different screen sizes (handsets/tablets).