Walmart Marketplace rule
Walmart: hero image must be JPG, PNG, or BMP
Walmart accepts JPEG/JPG, PNG, and BMP for product imagery. GIF, WebP, AVIF, and HEIC are not supported and will fail item setup ingestion. JPG is preferred for photographic content.
Audit my Walmart Marketplace imagesSee all rulesSource: marketplacelearn.walmart.com · Last verified 2026-05-31
What we check
CatalogPrep reads the file mime type and verifies it matches the Walmart-accepted list (JPEG, PNG, BMP).
How to fix
Re-export the image as JPG (preferred for photographic content) or PNG (preferred for transparent assets). CatalogPrep's export pipeline does this automatically when the Walmart preset is selected.
Detection summary
- Severity
- warning
- Auto-checkable
- Yes
- Auto-fixable
- Yes
- Manual review
- Not needed
- Last verified
- 2026-05-31