Walmart Marketplace image requirements

Export JPEG, resize first, and let the plain background do the work for you.

The good news is that a product on a seamless white background compresses extremely well. Flat areas of identical colour cost almost nothing in a JPEG, so most of the file is spent on the product itself. A single item on true white at 2000 x 2000 typically lands between 200 KB and 600 KB at 80 percent quality.

• Resize to exactly 2000 x 2000 before compressing, not after.
• Export JPEG at 80 to 85 percent quality and check the resulting size.
• Strip metadata, which can add tens of kilobytes.
• If it is still over 1 MB, the background is probably not clean. Noise, gradient and texture in what should be flat white are what inflate the file.

That last point is the useful diagnostic: on Walmart, a file that will not compress is usually telling you the background is not seamless.

Every background pixel at RGB 255,255,255, with no visible join, no shadow on the backdrop and no falloff towards the corners.

Photographing that is harder than it sounds. A sweep of white paper lit from one side reads 255 in the middle and somewhere in the 230s at the edges, and the curve where the paper leaves the table shows as a soft grey band. Walmart's reviewers see that band.

Replacing the background is the dependable route: cut the product out and place it on a flat white canvas, so every background pixel is the same value by construction. Photomop is a photo studio that runs on your own device, and its change background tool produces exactly this, a product on a uniform white field with no gradient to compress or explain.

Keep any contact shadow deliberate and subtle. A soft shadow directly under the product helps it sit on the page. A shadow that spreads across the frame turns the background into something that is no longer seamless white.

The main image. Secondary images are where the rest of your argument lives, and they do not need to be on white.

• Main image: product only, seamless pure white, no text, no props.
• Secondary images: in use, in context, at scale, from other angles.
• Detail images: materials, finish, controls, ports.
• Swatch images: a separate 100 x 100 asset for each colour or pattern variant.

The prohibition on graphics, text, overlays and borders is broader than the background rule and applies more widely, so resist the urge to add a feature callout even on a secondary image.

Check the three numbers in order, because they account for nearly every rejection.

• File size. Over 1 MB is the most common single cause, and it is the easiest to check across a whole folder at once.
• Dimensions. Under 500 x 500 fails outright. Between 500 and 2000 passes but disables zoom.
• Format. Animated GIFs are refused. So is anything outside JPEG, PNG, BMP and GIF, which rules out WebP, HEIC and TIFF.

If all three pass and the item is still rejected, the cause is usually visual: a background that is not seamless, a watermark, or text that is part of the packaging design and reads as an overlay.

Standardise the output before you touch the individual photos.

Decide on 2000 x 2000 square JPEG, pure white background, under 1 MB, and apply that as a single batch setting across the catalogue. Doing it per product is how a 400 item catalogue ends up with 400 slightly different backgrounds, some of which pass review and some of which do not.

Keep the originals. Walmart's guidelines have moved before, and re-exporting from a full resolution master is trivial while recovering detail from a compressed 1 MB JPEG is not.