What gets checked
Each marketplace has different expectations. The checker applies the right ones for the platform you pick:
| Platform | Recommended size | Ratio | White bg? |
|---|---|---|---|
| Amazon (main) | 1,600 × 1,600 px (min 1,000) | 1:1 | Required |
| Etsy | 2,700 × 2,025 px (min 2,000 short side) | 4:3 | Not required |
| eBay | 1,600 × 1,600 px (min 500) | 1:1 | Preferred |
| Shopify | 2,048 × 2,048 px | 1:1 | Not required |
Guidance, not official validation. This tool flags the common, measurable issues fast, but each marketplace runs its own checks when you upload. The white-background test is a pixel heuristic and can misjudge unusual images — always confirm by eye.
Fix whatever fails
- Wrong size or ratio → resize it for your platform.
- Background not white (Amazon) → generate a white background.
- File too heavy → compress it.
Selling on Amazon specifically? The dedicated Amazon image checker focuses on the main-image rules that get listings suppressed.
Frequently asked questions
Which marketplaces does this checker support?
Amazon, Etsy, eBay and Shopify. Pick the platform from the dropdown and the tool applies that marketplace's expectations.
What does the checker actually test?
Resolution vs the platform's minimum and recommended size, aspect ratio, background whiteness (where required), and whether the file size is reasonable.
Is my image uploaded anywhere?
No — all analysis runs locally in your browser via the HTML canvas.
Is this official validation?
No, it's independent guidance. It catches common problems quickly, but each marketplace runs its own checks at upload, so treat it as a pre-flight.