Updated on June 3, 2026
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What are variant images, and does Nembol support them?
Variant images are photos linked to specific product variants, for example, pictures of a t-shirt in red, rather than the product in general. Nembol supports variant images on all major channels that allow them, automatically adapting to each platform’s rules at publish time.
Which channels integrated with Nembol support variant images?
| Channel | Variant images? | Max per variant | How it works |
|---|---|---|---|
| Shopify | Yes | 1 | Free assignment — any variant can have any photo. The image must also appear in the main gallery. |
| WooCommerce | Yes | 1 | Free assignment. The variant image can live outside the main gallery. |
| Etsy | Yes | 1 | Grouped by option axis (e.g. all "Red" variants share the same photo). Image must also be in the main gallery. |
| eBay | Yes | 12 | Grouped by one option axis, typically Color. Variant images can live outside the main gallery. |
| TikTok Shop | Yes | 1 | Grouped by axis, but only Color or Size are accepted. Other option names fall back to no variant image. |
| Google Merchant Center | Yes | 11 | Free assignment. Each variant is treated as a separate product offer in Google Shopping. |
| Amazon | Yes | 9 | Free assignment. Each child ASIN carries its own independent image set (1 main + up to 8 additional). |
How variant images work on different channels?
Channels fall into two groups depending on how they link photos to variants:
- Shopify, WooCommerce, Google Merchant Center, Amazon
Every variant can carry its own independent set of photos. A “Red / Small” variant can show completely different images from a “Red / Large” variant. - Etsy, eBay, TikTok Shop
Photos are grouped by one option, almost always Color.
All variants that share the same Color value share the same photo, regardless of Size or other options. This is why on Etsy or eBay, tapping “Blue” changes the photo, but tapping “Large” doesn’t.
How Nembol manages variant images?
Assigning variant images in Nembol is straightforward:
- Log in to Nembol and open the Products tab.
- Click on the product you want to work on and then on “Edit”.
- Scroll to the Variants section.
- Select the variant you want to edit.
- Upload the photo for that variant by clicking on +
Please see image below. - Repeat for each variant, then publish.
When you publish, Nembol automatically applies each channel’s rules, whether that means one photo per variant, twelve, grouped by color, or a fully independent set per variant.
For channels that group variants by option axis (Etsy, eBay, TikTok Shop), Nembol automatically identifies the best grouping axis, bundles the photos, and respects the channel’s per-variant photo limit. You don’t need to set this up manually. If you prefer, you can also manually choose which option axis (for example, color or size) should be used to assign images to variants.
For large catalogs or bulk updates, Nembol also supports variant image assignment through CSV. Two dedicated fields, variant_image_link and variant_additional_image_link, let you map images directly to individual variants outside the interface, making it practical to manage hundreds of SKUs at once without editing each product manually.
Nembol also takes care of a few things in the background:
- Once a photo has been uploaded to a channel, Nembol stores the channel’s image ID. If you re-publish, the existing image is reused instead of uploaded again — avoiding duplicate-image warnings and saving bandwidth.
- If you edit a variant’s photo directly on a channel (e.g. swap the blue image on eBay), Nembol stores that as a per-channel override rather than overwriting your master photo in Nembol. Your cross-channel setup stays intact.
- Photos marked as “variant-only” are never added to the product gallery on channels that don’t require it. Only Shopify and Etsy get them promoted into the gallery, because those are the channels that actually need it.
What to know before publishing
TikTok Shop
TikTok only accepts Color and Size as the variant image axis. If your product uses a different option name (e.g. “Pattern” or “Style”), Nembol falls back to Color, and if that’s not present either, no variant image is sent.
Shopify and Etsy
Images must be in the gallery. On these two channels, a variant image must also appear in the product’s main image gallery. Nembol handles this automatically by promoting variant-only images into the gallery before publishing.
Note: We suggest checking how each channel manages images per variant before publishing to avoid unexpected errors and ensure ongoing compliance.