line 1 column 1 - Warning: missing declaration line 5 column 1 - Warning: attribute name "1/2" (value="xx") is invalid line 5 column 1 - Warning: unexpected or duplicate quote mark line 5 column 1 - Warning: unexpected or duplicate quote mark line 5 column 1 - Warning: attribute "width" has invalid value "align=""" line 5 column 1 - Warning: proprietary attribute "width" Info: Document content looks like HTML5 6 warnings, 0 errors were found! About HTML Tidy: https://github.com/htacg/tidy-html5 Bug reports and comments: https://github.com/htacg/tidy-html5/issues Or send questions and comments to: https://lists.w3.org/Archives/Public/public-htacg/ Latest HTML specification: http://dev.w3.org/html5/spec-author-view/ Validate your HTML documents: http://validator.w3.org/nu/ Lobby your company to join the W3C: http://www.w3.org/Consortium