If you want to allow your customers to edit their customizations after adding products to the cart, you can enable the edit customization feature.

1. Enable Edit Design in the Customix app

• Go to the Settings section, then select the Storefront tab. You will see the "Edit Design" feature, enable it:

2. Locate the Class for Render Design Image

• First go to your cart page, press F12 or right click and select Inspect:

• Then select the "element selector" icon and hover it to the cart page zone like the screenshot below:

• You'll see that it corresponds to the class ".cart-item__details", double-click on it to copy

3. Add Customix's Script Code to the Cart Page on Your Theme

• Go to your Shopify store admin -> Online Store -> Theme -> Click Edit Code:

• Next, click on the Search icon and paste the class name that copied at the previous step:

• Click on the search result under the "main-cart-items.liquid" sections

• Scroll to the end of this code part and add the code below:

{% assign cm_customization_id = item.properties['_cm-customization-id'] %}
                      {% assign cm_campaign = item.product.metafields.customix.campaign %}
                      {% if cm_customization_id %}
                        <div
                          class="cm-edit-customization"
                          data-cm-campaign="{{ cm_campaign | escape }}"
                          data-cm-customization-id="{{ cm_customization_id }}"
                          data-cm-variant-id="{{ item.id }}"
                          data-cart-item-key="{{ item.key }}"
                        ></div>
                      {% endif %}

• Then don't forget to click Save button

• After that you will see the "Edit Design" option displayed in the cart:

*Please note: this only adds the "Edit Design" button to the main cart page. If you'd also like to add it to the cart drawer, feel free to reach out to our team for support.

Updated on: 29/04/2026