{% if value %}
    {% set dataUrl = 'data:application/pdf;base64,' ~ value|replace({' ': '', '\n': '', '\r': ''}) %}
    <a href="{{ dataUrl }}" target="_blank">Voir PDF</a><br>
    <embed src="{{ dataUrl }}" type="application/pdf" width="400" height="500"/>
{% else %}
    <span>Aucun PDF</span>
{% endif %}