Separate supported file types from listing policy
Amazon's product-image guidance lists JPEG, TIFF, PNG and non-animated GIF. The reviewed source gives a longest-side range of 500 to 10,000 pixels. Its recommendation for images above 1,000 pixels to support zoom should not be mistaken for a universal hard minimum of 1,000 pixels for every uploaded image.
Those file properties are not the whole listing policy. Product presentation, the main image and category-specific requirements still matter. Read the current instructions in Seller Central for the product and marketplace. This guide is about preparing image files; it is not a promise that a technically valid image will be approved or selected for display.
Check the longest side without changing the shape
Measure both the width and height of your source. A longest-side rule is different from a requirement that both sides have the same minimum. A tall bottle image and a wide landscape product photo can have very different shapes while sharing the same longest dimension. Do not stretch the shorter side just to make the numbers match.
The compatibility checker offers separate width and height limits. It does not currently provide a dedicated longest-side-only rule, so this guide does not silently translate Amazon's rule into an inaccurate pair of minimum dimensions. Read the measured dimensions and compare the larger value with the source guidance. Preserve the product's proportions when preparing a new export.
Use the original product artwork where possible
Begin with the cleanest source photo or artwork you have permission to use. A picture downloaded from a previous listing, a messaging app or a screenshot may already have been resized and compressed. Additional conversion cannot restore missing texture, small printed labels or the fine edges of the product.
Inspect the image at a normal viewing size and then zoom into details that matter to the customer. Check that the photographed product matches the intended variation. A technically excellent image of the wrong colour or pack quantity is not the right contribution for that item. Keep the source files organised by product and variation rather than relying on similar filenames alone.
Convert the image, not just its extension
If you have a WebP or HEIC source and the upload route needs JPEG or PNG, use an actual conversion. Renaming an extension changes the label, not the encoded data. A genuine conversion creates new output bytes that can be inspected and decoded independently. Open the download before using it in Seller Central.
This site's tools handle selected browser-decodable images, not every format Amazon lists. For example, a TIFF source may need an appropriate image editor before it can be processed here. Do not interpret a limitation of our tool as a limitation of Amazon's platform. Choose the accepted output that suits the artwork and the current upload instructions.
Watch transparency and background decisions
PNG can carry transparent areas; JPEG cannot. When an operation would replace transparency with a solid background, choose that background deliberately and examine the result. Pale product edges and white artwork can disappear when placed against white, while a dark background can introduce a different presentation problem.
A background choice in the converter is not an automatic compliance check for Amazon's main-image rules. Nor does it remove an existing photographed backdrop: colour already recorded in the pixels remains part of the picture. Prepare the product image appropriately in the original editing workflow instead of treating a format change as a substitute for careful photography.
Do not mix individual-image and bulk-upload limits
Seller Central offers different ways to contribute images. An individual image field and a bulk image upload are not the same input. A limit applied to a ZIP archive or a batch says nothing by itself about the permitted size of each image inside it. Read the instructions for the actual upload method you have selected.
Our batch compression tool can create a ZIP to make several local downloads easier to collect. That archive is not automatically a valid Amazon bulk submission: filenames, product identifiers and the required batch structure may matter. Extract and review the results, or follow the official bulk process carefully, rather than uploading any generated ZIP and expecting the platform to infer the intended products.
When the upload works but the listing does not change
A successful transfer confirms that the system received something, not that the public detail page must immediately use it. Check the product identifier, image position and contribution status available in Seller Central. Do not keep making lower-quality variants in response to a display issue that may have nothing to do with file bytes.
Amazon's guidance notes that image display involves selection and processing. Use the current help route for the upload method when the contribution is not reflected as expected. Keep a record of the intended image, product and time of submission. A file checker cannot inspect your Seller Central account or determine why another contribution remains on the listing.
A practical final check for each product image
Before uploading the prepared version, confirm the product and variation, actual format, measured dimensions and visual appearance. Check the downloaded file rather than the editor's unsaved canvas. Make sure the filename points to the item you mean to update, particularly when several product images were exported together.
If you still receive a technical rejection, save the wording and compare it with the measured properties. A pixel-size error requires a different change from an unsupported-type error. Describe that distinction when contacting Seller Central support. Our local tools can prepare supported copies, but they do not certify Amazon listing compliance, remove policy restrictions or guarantee publication.
Questions that come up
Must every Amazon product photo be at least 1,000 pixels?
The reviewed Amazon guidance gives a 500-pixel minimum on the longest side and recommends higher resolution for zoom. Do not turn that recommendation into a universal minimum for both width and height. Check the current category and marketplace instructions as well as the technical dimensions.
Why is there no Amazon file-size preset in the checker?
The reviewed sources distinguish image properties and upload methods rather than establishing one byte ceiling suitable for every Seller Central field. Loading a guessed size cap would be misleading. Enter a maximum only when the upload screen you are using actually provides it.
Can I make a rejected product picture acceptable by converting it to JPG?
Conversion can resolve an unsupported encoded format when JPEG is accepted. It cannot correct the wrong product, missing detail, misleading artwork or another image-policy issue. Review both the technical output and the listing instructions; a successful conversion is not an approval decision.