Amazon Minimum Image Size: Why 500 and 1,000 Pixels Are Both Correct

Which number is the minimum: 500 or 1,000?

Amazon's Product image guide (G1881) carries both numbers, but that page sits behind the seller sign-in. The same two figures are restated on Amazon-owned pages anyone can open: Manny_Amazon's Listings Lounge thread in the Seller Forums gives the range as "500 to 10,000 pixels on their longest side", and Amazon's public seller blog gives the zoom preference. The two numbers describe two different things, and almost every guide on the internet prints only the second one and calls it the minimum.

The 500 figure is enforcement. Amazon staff put the accepted range at 500 to 10,000 pixels on the longest side, and state the minimum as 500 pixels on the longest side. Below that, the file does not go in. There is no warning state and no soft penalty attached to it. The file either goes in or it does not, and you find out at the moment you try.

The 1,000 figure is a feature switch. Below it your listing still works and your image still shows, the magnifier on the detail page just stays off. So an 800 pixel photo is a live, legal, uploadable Amazon image with no zoom. That is worse than a 2,000 pixel photo. It is not the same thing as non-compliant, and deleting it on that basis is a mistake.

Every Amazon image size threshold in one table

Every documented size threshold sits in one place below, with what it does and where it comes from. Five of the seven rows trace back to an Amazon help page or a post by Amazon staff. The two that do not are labelled as such. A table like this is only worth screenshotting if the one row a sceptical reader checks holds up.

The row people misread is the third one. 1,600 pixels is a recommendation from Amazon staff in the forums, repeated over several years. It does not appear in the help pages, so treat it as strong advice from people who work there rather than a rule enforced at upload. The last row is the other one people get wrong, because Amazon publishes no file size cap for product images at all.

Why 1,000 pixels became the folklore answer

You can watch the mistake happen in Amazon's own writing. Its public seller blog, dated 4 December 2024, leads with a full sentence: "We prefer images to be larger than 1,000 pixels on each side to allow for zoom, which can enhance sales." The actual floor, "500 to 10,000 pixels on their longest side", appears further down as one bullet in a list of requirements.

So the preference got the prose and the rule got the bullet. Prose is what people quote. Every downstream guide copied the headline sentence, dropped the bullet, changed "we prefer" into "the minimum is", and the next guide copied that. Ten years of copying later, the internet's consensus answer is a rounded preference rather than the published limit. Nobody had to invent anything for that to happen, and Amazon moderators repeat the same rounding.

The cost lands on sellers. One seller bins an 800 pixel supplier photo that would have uploaded fine and shown fine. Another uploads an exactly 1,000 pixel file, believing it is the recommended size. The zoom on that listing technically works, and it shows the customer almost nothing new. Both mistakes come from the same missing sentence: 1,000 is where zoom starts, not where quality does.

Where does the 1,600 pixel figure come from?

From Amazon staff, in the forums, repeatedly. In a thread on AI generated product images, posted around July 2026, moderator TaylorR_Amazon wrote this: "the minimum resolution is 500px on the longest side (though 1600px+ is recommended for the zoom feature)". That is an Amazon employee giving the 500 floor and the 1,600 recommendation in a single sentence, which is more than most published guides manage.

It is not new advice either. About two years earlier, in a separate forum thread, the moderator Manny_Amazon wrote: "While 1600 x 1600 pixels is acceptable, Amazon actually allows and encourages even larger images. The maximum size for product images is 10,000 x 10,000 pixels." Same number, different year, same message: go bigger than the threshold, because the threshold is not the target.

The documentation and the staff answer do not line up. The help pages attach zoom to 1,000 pixels, while staff attach it to 1,600 and up. The reading that fits both: 1,000 pixels switches zoom on, and 1,600 or more is where the zoomed view actually earns its place. Either way, 1,600 is absent from the help pages, so attribute it to staff when you repeat it. Amazon's staff do not agree with each other either. Moderator Dougal_Amazon's 2026 Product Photography Standards thread states "Minimum size: 1000 pixels on the longest side", where TaylorR_Amazon gives 500. So the 1,000-as-minimum answer is not only a vendor copying error: it is also published by Amazon moderators. Treat 500 as the figure the help page and TaylorR_Amazon give for upload acceptance, and expect to be told 1,000 by Amazon staff as well as by guides.

How do you check an image's real pixel size?

Do not trust the file name, the folder label, or what your supplier told you. Photos get resized in transit by chat apps, email clients and cheap resizers. A file called product-2000px.jpg is very often 900 pixels wide. Checking the real dimensions takes a few seconds on any device, and it is the one step that stops you arguing about a file nobody actually looked at.

Do this on the file you are about to upload, not on the one in your master folder. The export step is where the size actually gets decided. A preset you set up two years ago for a different marketplace will happily hand you 1,000 pixels when you asked for 2,000. Check the dimensions again after every resize, crop or re-export, because each of those steps can quietly change them.

• ✓Mac: select the file in Finder and press Command plus I, then read the Dimensions line. Preview shows the same under Tools, then Show Inspector.
• ✓Windows: right click the file, choose Properties, open the Details tab and read Width and Height.
• ✓iPhone: open the photo in the Photos app and swipe up, or tap the info button. The pixel dimensions sit under the date.
• ✓Android: open the photo in Google Photos, swipe up or tap the three dot menu, and read the resolution line.
• ✓Any computer: drag the image file into a new browser tab. The tab title shows the pixel dimensions next to the file name.

Why upscaling a small photo to hit 1,000 pixels backfires

Upscaling does not recover detail, it guesses. Software looks at the pixels that exist and invents new ones between them, which is fine for a thumbnail and poor everywhere else. The problem is what the extra pixels buy you: zoom. You have used invented detail to switch on the one feature that puts a magnifying glass over invented detail. The customer clicks in expecting to read a label and gets mush.

Two related numbers confuse people here. Amazon's Product image guide asks for at least 72 dpi. Sellers who came from print see that and try to export at 300 dpi, which changes nothing on screen. Dpi is metadata describing print size, not pixels. A 2,000 pixel image tagged 72 dpi and the same image tagged 300 dpi are byte for byte the same picture in a browser.

Amazon's A+ Content gives the clearest evidence against shooting small. Oversized images are resized down to fit the module template, but images smaller than the template specification are never enlarged. They simply render small. Standard modules top out at 970 by 600, and the widest Premium module asks for 1464 by 600, so an undersized asset stays undersized. If you need a bigger file, reshoot it or generate a new one at the size you want. Picmato generates each shot at a chosen resolution: 1K, which is 1,024 pixels, on Free and Starter, and 2K or 4K on Pro or Max. It does not upscale, sharpen or enlarge a photo you already have.

What size should you actually shoot or generate at?

Aim for 2,000 to 3,000 pixels square. That is our recommendation rather than a platform rule, and it is arithmetic on the verified thresholds. It clears Amazon's 1,000 pixel zoom line with room to spare and sits above the 1,600 that Amazon staff keep recommending. It stays well inside the 10,000 pixel ceiling, and gives A+ Content something to downscale rather than something it refuses to enlarge.

It also travels. Walmart US turns zoom on at 1,500 by 1,500 pixels, not 1,000, and Walmart Canada's pages give 1,000 and 2,000 depending on which one you read. An image sized for Amazon's threshold alone can land under a Walmart zoom line. A 2,000 to 3,000 pixel square master clears both platforms with room to spare. Our post on Walmart zoom image size covers Walmart's own numbers and the Listing Quality defects behind them, and it is the page to read before you build a cross-marketplace master.

One caveat on file size. Walmart US caps product images at 5 MB, Walmart Canada's item image page caps them at 1 MB, and Amazon A+ Content caps files at 2 MB. Build to the 1 MB figure and you clear all three. A 3,000 pixel master needs sensible JPEG compression to get there. The pixel dimensions can be shared. The exported file often cannot, which is why it pays to keep one large master and export a separate file for each destination.

Formats, colour mode, and the 10 MB file size myth

Amazon documents four accepted formats: JPEG, TIFF, PNG and non-animated GIF, with JPEG preferred. Colour mode is RGB. If you see a guide saying "sRGB or CMYK", it is stale. Amazon's Technical image file requirements page tells sellers to convert CMYK to RGB before uploading, on the grounds that RGB is the mode screens use and CMYK is meant for print. That page sits behind the seller sign-in, so we cannot show you its wording. A+ Content is blunter: RGB colorspace only. Amazon also advises against embedding ICC profiles, which are a printing tool.

Amazon's documentation and Amazon's uploader do not list the same formats. The uploader's own error message lists a wider set than the help pages do, including WEBP. The July 2026 staff answer listed JPG, JPEG, PNG, GIF and WEBP, and omitted TIFF. So WEBP works in practice but is not in the docs. Ship JPEG and you never have to think about it. Amazon also asks for minimal or no compression, so save at the highest quality your exporter offers.

Amazon publishes no file size cap for product images. None of Amazon's image help pages states one, and three of the four (the Product image guide, Technical image file requirements and the A+ Content guide) sit behind the seller sign-in, so we could not read their current wording directly. The 10 MB number most likely comes from Amazon's own upload error string, which ends in 10485760 KB. That is exactly 10 MiB, mislabelled as KB. Sellers in Amazon's forums report very large JPEGs refused at upload. Treat 10 MB as a safe working ceiling, never as an Amazon requirement.