searxng/searx/templates/oscar/result_templates/images.html

<a href="#" data-toggle="modal" data-target="#modal-{{ index }}">
    <img src="{{ result.img_src }}" alt="{{ result.title|e }}" class="img-thumbnail">
</a>

<div class="modal fade" id="modal-{{ index }}" tabindex="-1" role="dialog" aria-hidden="true">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">&times;</span><span class="sr-only">Close</span></button>
                <h4 class="modal-title">{{ result.title|striptags }}</h4>
            </div>
            <div class="modal-body">
                <img class="img-responsive center-block" src="{{ result.img_src }}" alt="{{ result.title }}">
            </div>
            <div class="modal-footer">
                <a href="{{ result.img_src }}" class="btn btn-default">{{ _('Get image') }}</a>
                <a href="{{ result.url }}" class="btn btn-default">{{ _('View source') }}</a>
            </div>
        </div>
    </div>
</div>