Amazon Image Size Checker

The main image mode in this tool is intentionally stricter. It treats non-square canvases and non-white edge samples as upload risks, and it reminds sellers to manually inspect text, badges, borders, watermarks, and framing.

Additional image mode is more flexible because secondary photos can explain scale, use cases, compatibility, packaging, installation, and product details. They still need quality control: keep claims accurate, mobile-readable, and useful to shoppers.

Amazon shoppers often compare products from search results before reading long descriptions. A small, off-ratio, heavy, or inconsistent product photo can make a listing feel less reliable even when the product itself is competitive.

This free Amazon image size checker helps sellers catch common problems before upload. It is not a replacement for official marketplace policy, but it gives operators a fast pre-flight check for dimensions, ratio, file size, and practical repair steps.

A 1000x1000 pixel image is a useful baseline for many listings because it is square and meets the long-side threshold used by this checker for zoom eligibility.

Main images are stricter because they are the primary marketplace representation of the product. Additional images can show lifestyle context, details, scale, compatibility, and explanatory graphics.

Use an Amazon image size checker before every listing upload, especially when a supplier, photographer, or design team sends new product assets. Start with the main image, confirm the long side is large enough for zoom, check that the canvas is square, and make sure the file size is under the upload limit.

Then review the parts automation cannot fully judge: product fill, pure white background quality, props, badges, text, borders, logos, and watermarks. This workflow turns Amazon image size review into a repeatable step instead of a last-minute rejection fix.

Common Amazon image size problems include images that are too small for zoom, non-square main image crops, files over 10MB, transparent backgrounds, gray canvas edges, or product photos exported from design software with the wrong dimensions. A product image can look fine in a folder but still fail practical marketplace checks.

For the safest upload, keep a clean 1000x1000 JPG or larger source, preserve sharp product edges, avoid unnecessary compression, and verify the image size before adding it to a live listing.

After Turnstile verification, the browser can generate a 1000x1000 JPG with a pure white canvas and draw your original image proportionally in the center without stretching the product.

The validation and canvas export happen locally in your browser. The only network request in the protected download flow is a Turnstile token verification request to the configured Cloudflare Worker endpoint.