These CKAN Versions are exactely matched:

• 2.5.2
• 2.5.3
• 2.5.4
• 2.5.5
• 2.5.6
• 2.5.7
• 2.5.8
• 2.5.9

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========================

ckanext-datasetthumbnail

This CKAN extension adds support for generation and display of thumbnail images. The helper function thumbnail_url can be called from a template, as in this example:

::

{% block thumbnail %}
{% set thumbnail = h.thumbnail_url(package.id) %}
{% if  thumbnail %}
    <a href="{{ h.url_for(controller='package', action='read', id=package.name) }}">
    <img class="dataset-list-thumbnail" src="{{ thumbnail }}">
    </a>
{% endif %}
{% endblock %}

• If a resource exists with the name thumbnail.png, this will be used.
• If no resource exists with this name and the logged-in user has sufficient access, the thumbnail will be generated from the first matching JPEG or PNG resource.
• If no thumbnail exists at this point, a placeholder image wil