This tool is an ongoing experiment in better HTML checking, and its behavior remains subject to change
Error: Bad value http://www.w3.org/1999/xhtml
for the attribute xmlns
(only http://www.w3.org/1999/xhtml
permitted here).
From line 1, column 45; to line 2, column 110
0-04-03-->↩<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">↩ <h
Warning: Attribute xmlns
is not serializable as XML 1.0.
From line 1, column 45; to line 2, column 110
0-04-03-->↩<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">↩ <h
Info: Trailing slash on void elements has no effect and interacts badly with unquoted attribute values.
From line 4, column 7; to line 4, column 30
ad>↩ <meta charset="utf-8" />↩
Info: Trailing slash on void elements has no effect and interacts badly with unquoted attribute values.
From line 7, column 7; to line 7, column 76
le>↩ <meta content="width=device-width, initial-scale=1" name="viewport" />↩
Info: Trailing slash on void elements has no effect and interacts badly with unquoted attribute values.
From line 8, column 7; to line 8, column 81
/>↩ <link rel="stylesheet" media="all" title="CEUR-WS" href="../ceur-ws.css" />↩
Info: Trailing slash on void elements has no effect and interacts badly with unquoted attribute values.
From line 9, column 7; to line 9, column 90
/>↩ <link rel="stylesheet" media="all" title="CEUR-WS" href="../ceur-ws-semantic.css" />↩ </
Info: Trailing slash on void elements has no effect and interacts badly with unquoted attribute values.
From line 13, column 93; to line 13, column 224
-ws.org/"><img alt="CEUR-WS" height="100" src="https://ceur-ws.org/CEUR-WS-logo.png" width="390" /></a></
Info: Trailing slash on void elements has no effect and interacts badly with unquoted attribute values.
From line 28, column 17; to line 28, column 145
<dd><img alt="CC BY" height="35" src="https://ceur-ws.org/cc-by_100x35.png" width="100" /><span>
There were errors.
Used the schema for HTML + SVG 1.1 + MathML 3.0 + RDFa 1.1.
Used the HTML parser. Externally specified character encoding was utf-8.
Total execution time 882 milliseconds.
About this checker • Report an issue • Version: 25.8.15