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Catalogs with 5-7 images per SKU consistently outperform single-image catalogs by 10-25% on click-through across most retail verticals. The mechanism: additional images fuel Meta's Advantage+ creative testing, surface in expanded product detail views on Google and Pinterest, and reduce return rates by giving users more accurate pre-purchase information. Fashion, home goods, and electronics see the largest lift; commodity categories see less.

The right mix is 1 clean primary shot (the image_link) plus 2-3 multi-angle product shots (back, side, detail) plus 1-2 lifestyle or in-context shots showing the product in use. More than 5-7 images is past diminishing returns — channels surface 3-4 in most placements; additional ones only appear in expanded detail views. Quality over quantity: three excellent images outperform ten mediocre ones, every time.

Each additional image must meet the same resolution and policy rules as image_link. The most common operational failure is allowing additional images to drift in quality — the primary image is reshot to current standards but the additional images stay at older 600x600 thumbnails. Channels notice the inconsistency and downgrade the listing accordingly. Audit additional images on the same cadence as primary images.