Product Main Image Keeps Getting Rejected? Amazon's White-Background Rules
Anyone who has listed a product online hits this wall at some point. You shoot a nice product photo, upload it as your main image—and it's rejected for "not meeting image requirements," with your listing suppressed in the worst case. Strict marketplaces like Amazon won't pass an image unless even the background color is exactly right. "Isn't any white background fine?" you think—but the white a marketplace means is stricter than you'd expect.
Here's the bottom line. Check each marketplace's rules first, fix the background to spec, then match the size (pixels)—and rejections drop sharply. Let's compare what Amazon means by pure white, how Coupang and Naver Smart Store differ, and how to prep your photo, step by step.
Each marketplace's 'white background' bar is different
The most common misconception is "white is white." Amazon's main image requires pure white—RGB 255,255,255. A light gray (240,240,240) that looks white at a glance, a slightly toned-down off-white (250,250,250), and a transparent background are all treated as violations. Coupang and Naver Smart Store also lean toward a clean white background with the product clearly visible, so white is effectively a shared standard across most marketplaces.
| Item | Amazon (main) | Coupang / Smart Store (main) |
|---|---|---|
| Background | Pure white 255,255,255, strict | Clean white background recommended |
| Minimum size | 1,000px longest side (1,600px+ rec.) | At least 1,000x1,000px |
| Product share | 85%+ of the frame | Product sharp, centered |
| Text / logo | Banned on the main image | Avoid overlay on the main image |
Break the rules, and the loss looks like this
A violation doesn't always end with "just re-upload."
- Background isn't pure white — gray, off-white, or transparent gets caught on Amazon's main image.
- Image is too small — below the minimum pixel size, zoom won't work, hurting conversion too.
- Product too small or text overlaid — violates the 85% rule and the ban on main-image text.
Prep your main image like this
Keep the order and it's easy: background first, then size.
Cleanly isolate the product from the background
If your shooting background is messy or color-mixed, first isolate just the product transparently with background removal. This clears the original background's shadows and blemishes, making it easy to place the product on a clean white background next. Complex edges like hair or transparent materials have automatic-processing limits, so check the result once.
Put it on a white background, then confirm it's the compliant white
Saving the isolated transparent PNG as JPG (which doesn't support transparency) fills the empty area. You can convert PNG to JPG with image conversion, but whether the filled background is the required pure white (255,255,255) can vary by the image state and how it's saved. So a check after saving—whether the background is actually white—is essential. Marketplaces do screen out gray and off-white.
Match the minimum pixel spec
Finally, match the marketplace's minimum size. If the image is too large, fit it to the target pixels (say, 1,600px on the longest side) with image resize; conversely, if the original is too small to meet the minimum, enlarge it crisply with a tool that enlarges images crisply, and then match the spec. Amazon recommends 1,600px+ for zoom, so prep with some margin.
- Isolate first — you must clear the messy background before laying on a clean white one.
- White, then check — verify the color meets spec right after saving.
- Size last — finish by matching the completed image to the minimum pixels.
Who needs this most
- Amazon and global sellers — the pure-white 255 rule is strictest, so prep is a must.
- Coupang and Smart Store sellers — when meeting minimum size, the 85% rule, and a clean white background.
- Solo sellers shooting on a phone — when fixing a background without a studio.
- Sellers listing across marketplaces — when remaking images to each marketplace's spec.
Three easy mistakes to avoid
In short — prep to spec and rejections vanish
Most main-image rejections were "not knowing the rule, or thinking it was white when it wasn't." Check the latest rules for the marketplace you sell on, isolate the product with background removal, build a white-background image with image conversion (do confirm the color), and match the spec with image resize—and you get a main image that passes without rejection. All free, right on the web, no install.
For Amazon's exact image requirements, check the product image guide in Seller Central; for local marketplaces, check the image rules in each seller center. Cross-channel summaries like this guide to per-marketplace listing image rules can also help.