line 1 column 1 - Warning: missing declaration line 4 column 1 - Warning: discarding unexpected line 5 column 1 - Error: is not recognized! line 5 column 1 - Warning: discarding unexpected line 6 column 1 - Warning: is not approved by W3C line 6 column 1 - Warning: isn't allowed in elements line 6 column 1 - Info: previously mentioned line 9 column 1 - Warning: is not approved by W3C line 9 column 1 - Warning: isn't allowed in elements line 8 column 1 - Info: previously mentioned line 5 column 1 - Warning: missing line 1 column 1 - Warning: inserting missing 'title' element line 8 column 1 - Warning: trimming empty Info: Document content looks like HTML5 10 warnings, 1 error were found! This document has errors that must be fixed before using HTML Tidy to generate a tidied up version. You are recommended to use CSS for controlling white space (e.g. for indentation, margins and line spacing). The proprietary element has limited vendor support. 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