White-background product photos: Walmart's published specs

You already know the main image should be on white. What you want is the number — how white, how big, and what gets an image kicked back.

The specs come first here, then the workflow. One thing to set expectations: of the seven destinations below, four publish their requirements in the open — Walmart Marketplace, Google Shopping, Shopify and Poshmark — while the three sellers ask about most keep theirs behind a login or on a page that would not load the day this was written. Where that is the case, this article says so rather than reprint a figure nobody re-checked, because a wrong specification costs more than a missing one when you are pushing a whole catalog.

What each marketplace actually requires

Amazon

Amazon is the strict one, and its main-image rules are what the category grew up around: pure white rather than a background that merely looks light, the product filling most of the frame, a longest side big enough to turn on zoom, and the product alone — no added text, logos, watermarks, inset panels or props that aren't in the box.

No pixel figure for Amazon is printed here. Amazon keeps the current page inside Seller Central behind the seller login, so no third-party summary — this one included — is the authority on it. Open Product image requirements from your own account before a large upload.

eBay

eBay publishes a picture policy covering image size, borders, text and graphics added on top of a photo, and marks placed on a listing image. None of its thresholds or permissions are reproduced here, in either direction: the page did not load on the day this was written, and a rule nobody re-read is worse than no rule at all. Check the current Picture policy in eBay's help center before you upload.

Etsy

Etsy works differently from a catalog marketplace — the first image is a shopfront in a browsing grid, so square is the shape to plan for. Etsy's Seller Handbook carries the current dimensions; its help pages errored when this was written, so no pixel figure is reproduced here.

Walmart Marketplace

Walmart publishes its image guidelines openly, in the most detail of anyone here — a sane reference point to build a master file against while you go read the specs sitting behind a login:

• Recommended: 2,200 × 2,200 px, with 1,500 × 1,500 px as the minimum for zoom to work
• Aspect ratio: 1:1 square
• Background: "Seamless white (255/255/255 RGB)" — the exact value, stated in the guidelines
• File formats: JPEG, JPG, PNG, BMP. GIF images aren't permitted
• Color mode RGB, 8 bits per pixel, and 5 MB or less per file
• Swatch images: 100 × 100 px
• The primary image must not contain: watermarks, your name or your logo; accessories that aren't included with the item; claims or promotional language about the item; Walmart or competitor logos and names; non-English text; descriptions of the item's condition

Two more, easy to miss because they aren't dimensions: a minimum of four images per listing, and enforcement at both ends — a listing won't publish while a placeholder stands in for the real photo, and noncompliant images may result in products being unpublished after they're live.

Google Shopping

Not a marketplace, but a surface listings get syndicated onto, and it publishes everything. Merchant Center asks for "At least 500 x 500 pixels" and recommends "images around 1500x1500 pixels or above to ensure best performance in all listing formats," with "No image larger than 64 megapixels" and "No image file larger than 16MB." Its prohibitions land where everyone else's do: no "overlay, for example, watermarks, brand names, logos (unless it's an inherent part of the product itself)," don't "use an image with a border," don't "use a placeholder or an image that doesn't show your product."

Your own storefront

Your own site has a ceiling rather than a floor. Shopify takes images "up to 5000 x 5000 px, or 25 megapixels" and "smaller than 20 MB," and says "For square product images, a size of 2048 x 2048 px usually displays best." PNG is listed first among its supported formats, which suits a cutout.

Poshmark and resale apps

Resale runs on phone photos, with one image doing the work. Poshmark's photography guide calls the first photo the Covershot, treats it as the listing's first impression, and recommends keeping it product-focused on a white or simple background. Listings hold up to 16 photos and one video, so the Covershot carries the click and the rest carry condition, tags and scale — and a cutout gives you that first image without staging anything.

Cut out the background in six steps

1 — Start with a usable original

Input quality sets the ceiling: well lit, in focus, product fully inside the frame. The background can be as messy as your apartment — but the product's edges need to be sharp, especially bag handles, wire, mesh and anything transparent.

2 — Open the background remover

Sign in and open the tool. New accounts currently start with a credit balance, and each run shows its cost on the button before you press it.

3 — Upload the photo

Drag it in or pick it from your device — phone or desktop, same tool, nothing to install.

4 — Let the AI cut it out

The model separates the product from everything behind it and returns a PNG with a transparent background — no lassoing, no edge brushing. The result comes back without a watermark, which matters here specifically: marks on the primary image are prohibited outright on several of the platforms above.

5 — Place it on white and export

Because the subject is already isolated, the background is a choice rather than a re-shoot. Put the primary image on pure white; a brand color or a lifestyle scene belongs on the secondary images, since several platforms restrict only the primary. Export square, at the largest size the platform takes.

One export setting is worth knowing rather than guessing at. A background written as "255/255/255 RGB" at "8 bits per pixel" is describing the ordinary consumer encoding — sRGB, registered by the International Color Consortium as IEC 61966-2-1, 8 bits per component. Export in sRGB and white stays white on the buyer's screen; export in a wide-gamut space and the same background can arrive faintly warm or blue.

6 — Optional: sharpen or retouch

If the original was small or soft, upscale it — before the cutout, not after, because edge quality comes from edge detail.

Shooting so the cutout comes out clean

• Shoot near a window, in daylight. Warm indoor bulbs shift color, and color accuracy is what buyers open returns over — apparel, including swimwear, and cosmetics are worst affected.
• Take three or four angles per product, and cut out all of them so the set matches.
• Leave room around the product, so the model has a complete outline to trace and you have room to re-frame against the white.
• Clean the product first. Background removal removes the background. It does not remove dust, lint, creases or fingerprints.

Keeping a whole storefront consistent

Same background value, same crop ratio, same product-to-frame proportion, same angle order — a category page then reads as one shop rather than a pile of individually acceptable photos. That is also the argument for cutouts over a lightbox: a physical setup holds one background only as long as nothing moves.

The general workflow and file-format traps are in the background remover walkthrough; clearing a prop or a hand out of a shot before you cut is in removing people and objects from a photo.

What gets a listing image rejected

• Not actually white. A gray-white backdrop, or white gone blue in the shade, isn't the specified value — and a cutout removes the problem, because the background stops being something you photograph.
• Too small. Under the minimum, zoom doesn't switch on or the listing is treated as noncompliant.
• Something added. Text, badges, promotional language, logos, borders, inset panels: Walmart and Google both list these for the primary image.
• Wrong shape, cropped square by the grid, from the center, without asking.
• A placeholder or a stand-in. If it isn't the product, it doesn't publish.

Frequently asked questions

Does Amazon really require pure white, or just a light background?

Pure white is a specific value, not an impression — Walmart states it publicly as "Seamless white (255/255/255 RGB)". Amazon's own wording sits inside Seller Central behind the login; read it there, not in a secondhand copy.

What size should my product photos be?

Walmart publishes 2,200 × 2,200 px as recommended and 1,500 × 1,500 px as the minimum for zoom; Google Merchant Center asks at least 500 × 500 px and recommends around 1,500 × 1,500 px. Amazon, Etsy and eBay each publish their own, on pages this article could not open. Keep a square master at 2,200 px or larger and read each platform's live page before you upload.

Can I put my logo or a watermark on a listing photo?

Not on Walmart's primary image — its guidelines prohibit watermarks, your name and your logo there, along with promotional language about the item, competitor names, non-English text and descriptions of condition. eBay's picture policy also addresses marks on listing images, and this article deliberately does not state which way it comes down, because the page would not load to be re-read. Check the current Picture policy in eBay's help center rather than assuming one platform's rule carries to the other.

Why did my listing image get suppressed?

Walmart warns that noncompliant images may result in products being unpublished; the usual causes are resolution under the minimum, or something on the primary image that isn't allowed. Check the status reason in your seller dashboard, then re-export.

Do I need a lightbox and a real camera?

No. A recent phone near a window, product cleaned and given room in the frame — the background is being replaced anyway.

Do one product and compare it

Run one product photo through the background remover, put it on white, and check it against the spec above for wherever you sell. If it clears, the rest of the catalog is the same six steps with a different file.

How this article was made

1) Written — seo-content produced the en-US version of /blog/xoa-nen-anh-san-pham-ban-hang under brief I18N-11, on 08/29/2026.

2) Reviewed — seo-review re-ran the §G publication gate on 2026-09-06 (VIPIX session s148) on an earlier revision and returned PASS-WITH-FIXES, and the next revision fixed the issues that verdict names. Verdict on file: reviews/en-US-regate-s148-verdict.md (earlier gates, 2026-08-29: en-US-T1-regate-verdict.md, en-US-T2T4-gate-verdict.md, en-US-T3-gate-verdict.md). Since then, the article's internal links have been updated, and on 2026-09-28 this note was corrected.

3) Process — content drafted by the Vipix SEO team's LLM under a reviewed brief; edited and checked by the Vipix SEO team; no native-speaker contractor was engaged.