Why Merch by Amazon Rejects Designs for Pixels, Not Taste

The rejection reason nobody expects

New Merch sellers often brace for their design's creative content to be the sticking point — a trademark issue, a policy violation, an idea too close to something else. In practice, a huge share of rejections and print-quality problems trace back to something far less creative: the file simply wasn't sized, formatted or prepared to Amazon's exact technical specification.

Exact pixels, not "close enough"

Amazon's published requirements are exact pixel dimensions per product type — 4500×5400px for a standard tee, 4500×4050px for a hoodie or sweatshirt — not a suggested range. A design exported at a slightly different size, even one that looks fine on screen, either gets rejected outright or gets stretched or cropped unpredictably during printing.

Transparency is easy to lose without noticing

Merch requires a transparent background PNG, but it's surprisingly easy to accidentally flatten that transparency during editing or exporting — the file still opens and looks correct in an image viewer, right up until it prints with an unwanted solid background box behind the design.

Check the technical specs before uploading

Our Merch by Amazon Design Spec Checker checks a PNG against the required dimensions per product type, PNG format, transparency, file size and implied resolution — catching the technical problems before an upload gets rejected, though it can't judge design quality or content policy, which are separate checks Amazon still applies.