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

Showing results for https://www.ubuntu.com/

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  1. Warning: The banner role is unnecessary for element header.

    From line 87, column 5; to line 87, column 63

    -->↩↩ <header id="navigation" class="p-navigation" role="banner">↩

  2. Error: Bad value //www.w3.org/2000/svg for the attribute xmlns (only http://www.w3.org/2000/svg permitted here).

    From line 92, column 13; to line 92, column 92

    <svg xmlns="//www.w3.org/2000/svg" width="107" height="25" viewBox="0 0 107 25"><g><ci

  3. Warning: Attribute xmlns is not serializable as XML 1.0.

    From line 92, column 13; to line 92, column 92

    <svg xmlns="//www.w3.org/2000/svg" width="107" height="25" viewBox="0 0 107 25"><g><ci

  4. Error: Attribute pubdate not allowed on element time at this point.

    From line 490, column 18; to line 490, column 74

    <p><time pubdate datetime="Thu, 04 Jan 2018 18:49:06 +0000">4 Janu

    Attributes for element time:
    Global attributes
    datetime - Machine-readable value

  5. Error: Bad value Thu, 04 Jan 2018 18:49:06 +0000 for attribute datetime on element time: The literal did not satisfy the time-datetime format.

    From line 490, column 18; to line 490, column 74

    <p><time pubdate datetime="Thu, 04 Jan 2018 18:49:06 +0000">4 Janu

  6. Error: Attribute pubdate not allowed on element time at this point.

    From line 495, column 18; to line 495, column 74

    <p><time pubdate datetime="Wed, 03 Jan 2018 20:26:36 +0000">3 Janu

    Attributes for element time:
    Global attributes
    datetime - Machine-readable value

  7. Error: Bad value Wed, 03 Jan 2018 20:26:36 +0000 for attribute datetime on element time: The literal did not satisfy the time-datetime format.

    From line 495, column 18; to line 495, column 74

    <p><time pubdate datetime="Wed, 03 Jan 2018 20:26:36 +0000">3 Janu

  8. Error: Attribute pubdate not allowed on element time at this point.

    From line 500, column 18; to line 500, column 74

    <p><time pubdate datetime="Thu, 21 Dec 2017 16:40:54 +0000">21 Dec

    Attributes for element time:
    Global attributes
    datetime - Machine-readable value

  9. Error: Bad value Thu, 21 Dec 2017 16:40:54 +0000 for attribute datetime on element time: The literal did not satisfy the time-datetime format.

    From line 500, column 18; to line 500, column 74

    <p><time pubdate datetime="Thu, 21 Dec 2017 16:40:54 +0000">21 Dec

  10. Error: Attribute pubdate not allowed on element time at this point.

    From line 517, column 16; to line 517, column 72

    <p><time pubdate datetime="Thu, 05 Oct 2017 11:30:19 +0000">5 Octo

    Attributes for element time:
    Global attributes
    datetime - Machine-readable value

  11. Error: Bad value Thu, 05 Oct 2017 11:30:19 +0000 for attribute datetime on element time: The literal did not satisfy the time-datetime format.

    From line 517, column 16; to line 517, column 72

    <p><time pubdate datetime="Thu, 05 Oct 2017 11:30:19 +0000">5 Octo

  12. Error: An img element must have an alt attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

    From line 552, column 7; to line 552, column 167

    7">↩ <img src="https://assets.ubuntu.com/v1/0bfbd13b-cloud_section_bundle.svg?h=404" class="u-image-position--top u-hide--small" style="height: 380px; right: 50%;" />↩ <

  13. Error: An img element must have an alt attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

    From line 570, column 9; to line 570, column 95

    >↩ <img class="u-hide--small" src="https://assets.ubuntu.com/v1/808a4e5b-iot.png?h=300" />↩

  14. Error: An img element must have an alt attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

    From line 581, column 9; to line 581, column 117

    >↩ <img src="https://assets.ubuntu.com/v1/668136e7-containers.svg" class="u-hide--small" style="height: 85%;" />↩

  15. Error: An img element must have an alt attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

    From line 600, column 9; to line 600, column 99

    >↩ <img class="u-hide--small" src="https://assets.ubuntu.com/v1/7d267d01-desktop.png?h=350" />↩

  16. Error: The itemprop attribute was specified, but the element is not a property of any item.

    From line 459, column 61; to line 459, column 351

    w--small"><a itemprop="url" href="https://ubuntu.brighttalk.com/summit/ubuntu-enterprise-summit/" onclick="dat…akeover', 'eventLabel' : 'View on demand', 'eventValue' : undefined });" class="p-button--positive">View o

There were errors.

Used the schema for HTML with SVG 1.1, MathML 3.0, RDFa 1.1, and ITS 2.0 support.

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

Total execution time 451 milliseconds.

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