Guide to Ecommerce
Image Requirements

Getting your products listed to the “Big Three” of ecommerce marketplaces—Amazon, Walmart Marketplace and eBay—can be trickier than you’d think.

Even the largest of merchants still struggle with listing errors today, as a result of varying listing requirements and marketplace policies.

To make your life a little bit easier, we’ve compiled a complete list of image size requirements by channel.
Here's what you'll get:
  • Image specs for Amazon, Walmart ï»żMarketplace, and eBay
  • Technical requirements for each marketplace
  • Rules and guidelines for main images, swatch images, and more

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Nail the Image Requirements for Walmart, Amazon, an eBay

Images are the most critical factor marketplace algorithms use to determine listing ranks. In short, you have to get the images right or else your listings won't rank well...or even worse they could be delisted entirely. Use this free guide to make sure your images are perfect every time.
new revenue icon

+60.5% Conversion Rate

with high quality listings

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+24% Sales Revenue

with proper image requirements

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+83% More Orders

through more complete listings


Still the largest of all marketplaces with over 49% share of the U.S. ecommerce market, Amazon is the New York City of online real estate. It draws millions of new sellers each year and is a hyper competitive space to play in.

To sell or rank among the top one percent, you must abide by a strict code of conduct and know the anatomy of an Amazon listing inside out.

On Amazon, it's especially important to leverage images to amplify your branding. The longevity of your business depends on it.

McCombs Supply

McCombs processes thousands of orders a day across several ecommerce platforms, so my job would be chaotic—or near impossible, to be honest—had it not been for Zentail and the integrations and automations it provides.
Jose Lopez III, Operations Manager

Walmart Marketplace

Walmart Marketplace is quickly becoming a force to be reckoned with. In the first quarter of 2020, Walmart's ecommerce sales jumped 74%, and for the first time ever, Walmart was said to surpass eBay as the second largest retailer in the U.S.

While still a maturing platform with known limitations, the marketplace represents new online territory with big potential (and the channel with the biggest advantages in going head to head against Amazon).

If you’re looking to test out the platform, get your images up to snuff. Remember that Walmart is first and foremost known as a big-box retailer, so you'll want to present yourself like any other product on Walmart's shelves: authentic, reliable and reputed.


A longtime incumbent in the industry, eBay is one of those channels that’s hard to ignore. In recent years, it has also made moves to shed old assumptions about its platform and partner up with more brands.  

With experience and brands (including Dyson) already on its side, it’ll be interesting to see how eBay continues to be a revenue driver for today’s merchants.

When you’re teeing up your products for eBay, remember to maintain a professional look-and-feel with every listing to set yourself apart from the casual at-home seller.

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