The hard requirements (get these wrong and your listing gets suppressed)
Walmart distinguishes between mandatory rules and recommendations. Suppressions almost always come from the mandatory list.
| Requirement | Rule |
|---|---|
| Main image background | Pure white (RGB 255,255,255) |
| Minimum resolution | 1000 x 1000 px (2000 x 2000 strongly recommended) |
| Maximum file size | 5 MB per image |
| Accepted formats | JPG, PNG (JPG preferred for photographs) |
| Product coverage | Product fills 75–90% of the frame on the main image |
| Watermarks / logos / text | Not allowed on the main image |
| Props / accessories | Not allowed on the main image unless sold with the product |
| URL hosting | Public, non-expiring HTTPS URLs (no Dropbox/Drive share links) |
Off-white or cream backgrounds. Walmart's image checker is stricter than Amazon's — a background that reads "white" to the eye but is actually #FAFAFA can trigger a quality flag. Always export your main image with a true white fill, not "near white."
Image slots and what belongs in each
Walmart listings support a main image plus up to eight additional images. Unlike Amazon, Walmart doesn't formally require infographic-style images, but the top-performing listings use them anyway.
Walmart minimum (4 images)
- Main image on white
- Alternate angle
- Detail / close-up
- In-use or lifestyle
High-converting setup (8 images)
- Main image on white
- Hero benefit infographic
- 3–4 angle variations
- Scale / dimension graphic
- Lifestyle / in-context
- Comparison or feature callout
- What's in the box
The eighth slot is the one most sellers waste. Walmart's analytics show shoppers who scroll past the third image are 2–3x more likely to add to cart, so the further images do real work — they're not vanity slots.
Walmart vs Amazon: where the rules diverge
Most sellers cross-list, and the temptation is to reuse your Amazon assets. That works for about 70% of your library — but the differences will get you flagged.
| Spec | Amazon | Walmart |
|---|---|---|
| Minimum resolution | 1000 px longest side | 1000 x 1000 px (square) |
| Recommended resolution | 2000 px longest side | 2000 x 2000 px square |
| Aspect ratio | Flexible | Square preferred |
| Max file size | 10 MB | 5 MB |
| Background | Pure white (#FFFFFF) | Pure white (#FFFFFF) |
| Lifestyle on main image | Not allowed | Not allowed |
| Text on additional images | Allowed | Allowed |
| Apparel ghost mannequin | Strongly preferred | Allowed; flat lay also fine |
The square aspect ratio is the trap. Amazon-optimized images are often shot or cropped wider; uploading those to Walmart leaves white bars or, worse, cuts off product detail when Walmart's CDN squares them.
What actually moves conversion on Walmart
Meeting the requirements gets your listing live. These choices determine whether it sells.
The mobile share matters because Walmart's mobile product pages crop and re-flow images differently than desktop. A scale graphic with a small ruler that reads fine on a 27" monitor disappears on a phone. Design every additional image to be legible at 350 px wide.
Open your listing on a phone, hold it at arm's length, and ask: can someone tell what the product is and what makes it different in three seconds? If not, your slot 1 and slot 2 images aren't working hard enough.
A practical workflow for a 100-SKU catalog
The bottleneck for most sellers isn't shooting — it's the post-production lift required to meet Walmart's spec on every SKU. Here's a workflow that scales.
- Shoot once, crop square. Frame loose enough that a 1:1 crop preserves 75–90% product coverage.
- Background pass. Replace whatever you shot on with pure #FFFFFF. AI background removal handles this in seconds per image, including fine edges on apparel and hair.
- Color and exposure normalize. Walmart suppresses listings with inconsistent color across variants — match every SKU to a reference.
- Generate infographic slots. Build a template for slot 2 (benefit callout) and slot 5 (scale graphic) so each new SKU is a fill-in-the-blank, not a from-scratch design.
- Export to spec. 2000 x 2000 JPG, sRGB, quality 85, under 5 MB. Batch this — don't export one at a time.
- QA before upload. Walmart's bulk image checker will flag spec violations, but it doesn't catch composition issues. A 30-second human review per SKU pays for itself.
Tools like Retouchable compress steps 2–5 of this workflow — background replacement, color normalization, and infographic generation — into a single batch job, which is the difference between launching 100 SKUs in a weekend versus six weeks.
Pre-launch checklist
- Main image background is RGB 255/255/255 (not just visually white)
- Main image is square, minimum 2000 x 2000 px
- Product fills 75–90% of the main image frame
- No watermarks, logos, brand callouts, or props on the main image
- At least 4 images total; 6–8 if competitive category
- Every additional image is square and at least 1000 x 1000 px
- Slot 2 communicates the #1 benefit visually
- A scale or dimension image exists for any product where size matters
- Files are JPG, sRGB, under 5 MB each
- Image URLs are stable HTTPS, not expiring share links
- Variant colors are color-matched to each other under the same lighting