Please follow the steps below to enable options in Shopify’s packing slip template.

1. Navigate to the store’s Shopify Settings and click on Shipping.

2. Locate the  Packing Slip template and click on Edit

3. Copy the following code: 

{% for p in line_item.properties %}
{% assign hidden_property = p.first | first | replace: '_', true %}
{% unless p.last == blank %}
{% if hidden_property == 'true' %}
{% else %}
{{ p.first }}:
{% if p.last contains '/uploads/' or p.last contains '/assets/' or p.last contains '/products/' %}<img style="width:50px;height:auto" src="{{ p.last }}"/>{% else %}{{ p.last | newline_to_br }}
{% endif %}  
<br> 
{% endif %}
{% endunless %}
{% endfor %}

4. Paste the code that you just copied underneath the following code. These lines of code can be found on line 119 (if you are using the default template). 

{% if line_item.sku != blank %} 
<span class="line-item-description-line">
{{ line_item.sku }}
</span>
{% endif %}

5. Here’s what the template should now look like:

6. Save your changes!