Image specs by marketplace
| Marketplace | Recommended | Minimum | Max file | White background |
|---|---|---|---|---|
| Amazon (main) | 2000 × 2000 | 500px | 10 MB | Required, 85% fill |
| Walmart | 2000 × 2000 | 500px | 5 MB | Required, 50% fill |
| Etsy | 2000 × 2000 | 635px | 20 MB | No |
| eBay | 1600 × 1600 | 500px | 12 MB | No |
| Shopify | 2048 × 2048 | 800px | 20 MB | No |
| TikTok Shop | 1200 × 1200 | 600px | 5 MB | No |
| Poshmark | 1200 × 1600 | 600px | 10 MB | No |
Why "white" backgrounds still fail
Amazon reads the corner pixels and requires exactly RGB(255,255,255). A lightbox
typically produces about RGB(248,248,246) — identical to the eye, rejected by the
checker. That single mismatch is the most common cause of image suppression.
Fixing it means editing pixels, not buying better lighting. This tool flood-fills the backdrop from the corners and snaps it to pure white, leaving the product and its contact shadow alone. If the photo was shot on wood, grey or colour, it says so instead of guessing.
For the full rule set, including the 85% fill rule and what each Amazon rejection message actually means, see the Amazon product image requirements reference.
What it can't check
Watermarks, text overlays, props, borders and whether an object belongs to the product can't be judged from pixels. Those are listed on each result for you to confirm. Unmeasurable rules are marked unknown, never pass.
Is anything uploaded?
No. Load the page, go offline, and it still works.
Why not HEIC?
No browser decodes HEIC, Safari included. On iPhone: Settings → Camera → Formats → Most Compatible.
Specs verified 10 August 2026.