This tool is an ongoing experiment in better HTML checking, and its behavior remains subject to change

(X)HTML5 validation results for http://mathiasbynens.be/notes/etago

Validator Input

  1. Warning: Consider using the h1 element as a top-level heading only (all h1 elements are treated as top-level headings by many screen readers and other tools).

    From line 26, column 6; to line 26, column 29

    der>↩ <h1 itemprop="headline">The en

  2. Warning: Consider using the h1 element as a top-level heading only (all h1 elements are treated as top-level headings by many screen readers and other tools).

    From line 73, column 6; to line 73, column 9

    ts">↩ <h1>Commen

  3. Warning: Article lacks heading. Consider using h2-h6 elements to add identifying headings to all articles.

    From line 74, column 6; to line 74, column 114

    /h1>↩ <article id="comment-1" data-id="381" itemprop="comment" itemscope itemtype="http://schema.org/UserComments">↩

  4. Warning: Article lacks heading. Consider using h2-h6 elements to add identifying headings to all articles.

    From line 84, column 6; to line 84, column 130

    cle>↩ <article id="comment-2" data-id="382" class="mathias" itemprop="comment" itemscope itemtype="http://schema.org/UserComments">↩

  5. Warning: Article lacks heading. Consider using h2-h6 elements to add identifying headings to all articles.

    From line 93, column 6; to line 93, column 114

    cle>↩ <article id="comment-3" data-id="383" itemprop="comment" itemscope itemtype="http://schema.org/UserComments">↩

  6. Warning: Article lacks heading. Consider using h2-h6 elements to add identifying headings to all articles.

    From line 102, column 6; to line 102, column 114

    cle>↩ <article id="comment-4" data-id="384" itemprop="comment" itemscope itemtype="http://schema.org/UserComments">↩

  7. Warning: Article lacks heading. Consider using h2-h6 elements to add identifying headings to all articles.

    From line 112, column 6; to line 112, column 130

    cle>↩ <article id="comment-5" data-id="385" class="mathias" itemprop="comment" itemscope itemtype="http://schema.org/UserComments">↩

  8. Warning: Article lacks heading. Consider using h2-h6 elements to add identifying headings to all articles.

    From line 121, column 6; to line 121, column 114

    cle>↩ <article id="comment-6" data-id="409" itemprop="comment" itemscope itemtype="http://schema.org/UserComments">↩

  9. Warning: Article lacks heading. Consider using h2-h6 elements to add identifying headings to all articles.

    From line 132, column 6; to line 132, column 114

    cle>↩ <article id="comment-7" data-id="501" itemprop="comment" itemscope itemtype="http://schema.org/UserComments">↩

  10. Warning: Article lacks heading. Consider using h2-h6 elements to add identifying headings to all articles.

    From line 143, column 6; to line 143, column 114

    cle>↩ <article id="comment-8" data-id="604" itemprop="comment" itemscope itemtype="http://schema.org/UserComments">↩

  11. Warning: Article lacks heading. Consider using h2-h6 elements to add identifying headings to all articles.

    From line 158, column 6; to line 158, column 115

    cle>↩ <article id="comment-9" data-id="1088" itemprop="comment" itemscope itemtype="http://schema.org/UserComments">↩

  12. Warning: Article lacks heading. Consider using h2-h6 elements to add identifying headings to all articles.

    From line 167, column 6; to line 167, column 116

    cle>↩ <article id="comment-10" data-id="1111" itemprop="comment" itemscope itemtype="http://schema.org/UserComments">↩

  13. Warning: Consider using the h1 element as a top-level heading only (all h1 elements are treated as top-level headings by many screen readers and other tools).

    From line 178, column 6; to line 178, column 9

    ion>↩ <h1>Leave

  14. Warning: Section lacks heading. Consider using h2-h6 elements to add identifying headings to all sections.

    From line 22, column 3; to line 22, column 24

    header>↩ <section id="content">↩ <n

  15. Warning: Consider using the h1 element as a top-level heading only (all h1 elements are treated as top-level headings by many screen readers and other tools).

    From line 15, column 5; to line 15, column 8

    <nav>↩ <h1>Naviga

The document is valid HTML5 + ARIA + SVG 1.1 + MathML 2.0 (subject to the utter previewness of this service).

Used the HTML parser. Externally specified character encoding was UTF-8.

Total execution time 356 milliseconds.

About this checker • Report an issue • Version: 22.3.8