This tool is an ongoing experiment in better HTML checking, and its behavior remains subject to change
Info: Trailing slash on void elements has no effect and interacts badly with unquoted attribute values.
From line 239, column 270; to line 239, column 361
opyright"><img src="/https/validator.w3.org/https/baldanders.info/images/cc/by.s.png" alt="Attribution License" height="12"/></a> b
Info: Trailing slash on void elements has no effect and interacts badly with unquoted attribute values.
From line 286, column 284; to line 286, column 375
opyright"><img src="/https/validator.w3.org/https/baldanders.info/images/cc/by.s.png" alt="Attribution License" height="12"/></a> b
Info: Trailing slash on void elements has no effect and interacts badly with unquoted attribute values.
From line 314, column 287; to line 314, column 378
opyright"><img src="/https/validator.w3.org/https/baldanders.info/images/cc/by.s.png" alt="Attribution License" height="12"/></a> b
Info: Trailing slash on void elements has no effect and interacts badly with unquoted attribute values.
From line 343, column 288; to line 343, column 379
opyright"><img src="/https/validator.w3.org/https/baldanders.info/images/cc/by.s.png" alt="Attribution License" height="12"/></a> b
Info: Trailing slash on void elements has no effect and interacts badly with unquoted attribute values.
From line 368, column 279; to line 368, column 370
opyright"><img src="/https/validator.w3.org/https/baldanders.info/images/cc/by.s.png" alt="Attribution License" height="12"/></a> b
Info: Trailing slash on void elements has no effect and interacts badly with unquoted attribute values.
From line 400, column 276; to line 400, column 367
opyright"><img src="/https/validator.w3.org/https/baldanders.info/images/cc/by.s.png" alt="Attribution License" height="12"/></a> b
Error: Duplicate ID fig-5.
From line 416, column 1; to line 416, column 46
てみる。↩</p>↩<figure lang="en" id="fig-5" typeof="dc:Text">↩<tabl
Warning: The first occurrence of ID fig-5 was here.
From line 353, column 1; to line 353, column 46
とおり。↩</p>↩<figure lang="en" id="fig-5" typeof="dc:Text">↩<tabl
Info: Trailing slash on void elements has no effect and interacts badly with unquoted attribute values.
From line 433, column 1; to line 433, column 5
トークルームです。↩<br/>送信したテキ
Info: Trailing slash on void elements has no effect and interacts badly with unquoted attribute values.
From line 434, column 1; to line 434, column 5
ジは削除されます。↩<br/>※削除された
Info: Trailing slash on void elements has no effect and interacts badly with unquoted attribute values.
From line 438, column 1; to line 438, column 5
利用いただけます。↩<br/>・Andro
Info: Trailing slash on void elements has no effect and interacts badly with unquoted attribute values.
From line 439, column 1; to line 439, column 5
ョン4.5.0以上↩<br/>※LINEの
Info: Trailing slash on void elements has no effect and interacts badly with unquoted attribute values.
From line 440, column 1; to line 440, column 5
トをしてください。↩<br/>・日本、中国
Info: Trailing slash on void elements has no effect and interacts badly with unquoted attribute values.
From line 441, column 1; to line 441, column 5
だいているお客さま↩<br/>なお、対象と
Warning: Section lacks heading. Consider using h2-h6 elements to add identifying headings to all sections, or else use a div element instead for any cases where no heading is needed.
From line 169, column 1; to line 169, column 9
>↩</nav>↩↩<section><div>↩
There were errors.
<h1> 安全なメッセージング・アプリとは（追記あり）
<h2> [missing]
<h3> おまけ。
<h3> 【追記】敢えて LINE を評価してみる
<h1> Feedback
Used the schema for HTML + SVG 1.1 + MathML 3.0 + RDFa 1.1.
Used the HTML parser.
Total execution time 1494 milliseconds.