Print Shopify line-item properties.

1. In Shopify admin, open Settings → Shipping and delivery.
2. In Documents, open Packing slip template.
3. Locate the existing line_items_in_shipment loop or add the complete example below where item details should appear.
4. Preview with an order that contains real personalization values, then save.

A packing slip is generated for a shipment, so shipping_quantity can be more accurate than the order's total item quantity when fulfillment is split.

This complete loop prints the shipped item, shipped quantity, optional SKU, and every nonblank property whose name does not begin with an underscore.

{% for line_item in line_items_in_shipment %}
  <section class="production-line-item">
    <h2>{{ line_item.title | escape }}</h2>
    <p>
      Quantity: {{ line_item.shipping_quantity }}
      {% if line_item.sku != blank %}
        · SKU: {{ line_item.sku | escape }}
      {% endif %}
    </p>

    {% for property in line_item.properties %}
      {% assign property_first_character = property.first | slice: 0 %}
      {% unless property.last == blank or property_first_character == '_' %}
        <p>
          <strong>{{ property.first | escape }}:</strong>
          {{ property.last | escape }}
        </p>
      {% endunless %}
    {% endfor %}
  </section>
{% endfor %}

If your existing template already loops through line_items_in_shipment, copy only the inner for property block into the item markup. Do not nest a second item loop accidentally.

The complete example is also available as a reusable, MIT-licensed file in the open-source GitHub repository.

• Confirm the customization is stored as a line-item property, not a cart attribute or product metafield.
• Preview an order where the property value is present and the item belongs to the current shipment.
• Property names beginning with _ are intentionally excluded by this example.
• If a value is an uploaded-file URL or complex object, test its printed output before relying on it at the bench.

Want the Liquid block prepared for your real field names? Buy the fixed-price packing-slip setup.