Error 13040 — Image dimensions don't meet category-specific requirements

Some Amazon categories (especially apparel, jewelry, and books) have stricter image requirements than the global minimum. The image you uploaded meets the global standard but not the category-specific one.

Apparel typically requires 1000+ pixels on the long side; jewelry typically requires square format with the product centered. Submitting a smaller or differently-shaped image for those categories triggers 13040.

1. Look up your category's image requirements in Amazon Style Guides at sellercentral.amazon.com → Inventory → Add a Product → Style Guide.
2. Apparel: at least 1000×1000, square or vertical (4:5) preferred.
3. Jewelry: square 1500×1500 minimum, product centered with neutral background.
4. Books: cover-only, no spine/back. 800px+ on the long side, exact aspect ratio matching the physical book.
5. Re-upload images at the corrected dimensions.

• Using a generic 1000×1000 for apparel — needed but not sufficient if the category has additional rules
• Submitting horizontal (landscape) images in categories that require square or vertical