gnu-social/plugins/ImageEncoder/templates/imageEncoder/imageEncoderView.html.twig

<figure>
    <img class="u-photo"
         alt="{{ attachment.getBestTitle(note) }}"
         src="{{ attachment.getThumbnailUrl() }}"
         width="{{ thumbnail.getWidth() }}"
         height="{{ thumbnail.getHeight() }}">
        <figcaption>
            {% if attachment.getFilename() is not null %}
                <a href="{{ path('attachment_show', {'id': attachment.getId()}) }}">{{ attachment.getBestTitle(note) }}</a>
            {% else %}
                {{ attachment.getBestTitle(note) }}
            {% endif %}
        </figcaption>
</figure>