This feature is available starting from Vetro version 2.1.
By default, most Shopify themes only support media display based on a single option (usually Color).
Vetro supports multiple combined options (e.g. Color + Size) with a simple setup:
No image alt text required
No SEO impact
Fully compatible with all store languages (no reconfiguration needed)
Unlike other solutions that require complex metafield setup for each variant, Vetro keeps everything clean, simple, and easy to manage.
Go to Settings → Metafields and metaobjects → Metafield definitions → Products → Add definition
Set up the metafield as follows:
Name: Product group media
Namespace and key (Required): theme.group_media_obj
Type: JSON then Save.
Go to Theme Customize → Products → only_config_group_media
Notes:
Click Preview → Change product to the product you want to configure
Tick the checkbox(es) of the variant option(s) you want to group media
For each image / video, choose one of the following values:
Specific variant value
Example: Alabaster, Dark Olive, 20*20, 12*21 → Media shows only when that variant is selected
None → Media does not show for any variant
* → Media shows for all values of the selected option
Example:
Option = Color → * → Alabaster, Dark Olive… all display this media
Click COPY CODE
Click the Edit (pencil) icon of the configured product
Scroll down to the Product group media metafield
Paste the copied code → Save
You will follow option is enabled: Product page → Media → Show first media
When enabled, the theme always displays the first product media, regardless of the selected variant. So you will disable Show first media to display the correct variant image.

You can combine up to 3 options (e.g. Color – Size – Fabric).
This is due to Shopify’s limitation:
Maximum 3 product options
Maximum 2,048 variants per product
As a result, Product Group Media can only be configured within these limits.
Besides the product page, Product Group Media also works on:
Quick view

Featured product section