line 9 column 1 - Warning: isn't allowed in elements line 6 column 1 - Info: previously mentioned line 9 column 1 - Warning: inserting implicit Info: Doctype given is "-//W3C//DTD HTML 4.0 Transitional//EN" Info: Document content looks like HTML 4.01 Transitional Info: No system identifier in emitted doctype 2 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