Ecommerce Product Image Size Guide 2026: Every Platform's Requirements in One Place

Image sizing is the least interesting part of running an ecommerce store and one of the most expensive to get wrong. Too small and zoom silently switches off — the feature shoppers use right before they buy. Too large and every product page carries megabytes it doesn't need. Inconsistent, and your collection grid looks like it was assembled by three different people.

The good news: the platforms disagree less than their documentation suggests. There is one export that clears all of them.

The short answer

Export every product image at 2,048 x 2,048 px, square, JPEG or WebP, under 500 KB.

That file is above the minimum on every major platform, large enough for zoom everywhere, small enough to load quickly, and in the aspect ratio most storefronts crop to by default. If you stop reading here, you have the answer for about 90% of catalogs.

The rest of this guide is the other 10% — Etsy's file-size cap, Amazon's white-background rule, apparel stores that need 4:5, and anyone fixing a catalog uploaded at a dozen different sizes over several years.

Platform requirements at a glance

Platforms revise these rules quietly. Verify against the official docs before committing a large catalog run — the figures above are current as of September 2026.

What each platform actually cares about

Shopify

Shopify is permissive — it accepts up to 4,472 x 4,472 px and 20 MB — which is exactly why Shopify catalogs end up the messiest. Nothing stops you uploading a 300 px thumbnail next to a 12 MB camera export.

Two things matter here. Use 2,048 x 2,048, because that's what Shopify's zoom behaviour is tuned for. And keep every image square, because collection grids crop to a fixed ratio and mixed-ratio products produce uneven cards. Details: how to upgrade Shopify product images with AI.

Amazon

The strictest of the group, and the only one that penalises you without saying so. The main image must sit on a pure white RGB 255,255,255 background with the product filling roughly 85% of the frame, and it needs 1,000 px on the longest side before zoom turns on. No logos, watermarks, props or text on the main image — those belong in the gallery slots.

Full rule-by-rule breakdown, including what quietly gets listings suppressed: Amazon product image requirements in 2026.

WooCommerce

WooCommerce has no ceiling of its own — your theme and your host decide. The single product image width is set in Customizer → WooCommerce → Product Images, and uploading below that width makes WordPress upscale, which looks soft. Upload at 2,000 px and let WordPress generate the smaller sizes. Watch your host's upload cap, often 2-8 MB by default. More: improving WooCommerce product images with AI.

Etsy

Etsy is the outlier: a hard 1 MB per photo cap alongside a recommendation of 2,000 px on the shortest side. Those two constraints fight each other, so compression genuinely matters — export as WebP, or JPEG at quality 80, rather than shipping a maximum-quality file. Etsy also crops thumbnails to roughly 4:3, so keep the product centred with breathing room instead of filling the frame edge to edge.

eBay

The loosest minimum at 500 px, and the one most worth exceeding. eBay enables zoom at 1,600 px, and zoom is the highest-impact image setting on a marketplace where buyers inspect used and near-new goods closely. Use the same 2,048 px square file you use everywhere else.

Ecwid

Behaves much like Shopify — square, 2,048 px, generous limits. Because Ecwid embeds into other sites, consistency across the catalog matters more than any single image's resolution. See how to improve your Ecwid store product images.

Aspect ratio: pick one, then never mix

Resolution is a technical minimum. Aspect ratio is a design decision, and it's the one shoppers actually notice.

• 1:1 square — the default for marketplaces and most Shopify themes. Use it unless you have a specific reason not to.
• 4:5 portrait — better for apparel and on-model shots: more of the body, more vertical space on mobile, where most of your traffic is. It's also the native ratio for Instagram feed posts, so the same asset does double duty.
• 16:9 or 3:2 landscape — avoid for product images. It wastes vertical space on phones.

The mistake that costs more than picking the "wrong" ratio is picking several. A collection page mixing square, portrait and landscape reads as unfinished no matter how good each individual photo is. If your apparel line needs 4:5, give the entire apparel category 4:5 — not half of it.

On-model versus flat-lay is the other half of that decision: why model photos convert better than flat-lays.

Format and file size

• WebP — the default in 2026. Typically 25-35% smaller than an equivalent JPEG at the same visual quality, and accepted directly by Shopify, WooCommerce and Ecwid.
• JPEG — the universal fallback, and still what Amazon prefers for listing uploads. Quality 80-85 is the sweet spot; above 90 you're adding kilobytes nobody can see.
• PNG — only when you genuinely need transparency. A PNG product photo is often 4-5x the size of the same image as a JPEG, for no visible benefit.
• HEIC — what your phone shoots by default. Convert before uploading; platform support is inconsistent.

Target 200-500 KB per image at 2,048 px. Anything above 1 MB is load time you're paying for and shoppers aren't seeing — and image weight is usually the single largest contributor to a slow product page.

How many images per product

Size is only half the listing. Image count is the other half, and the easier win:

1. Main image — clean background, product centred, no props or text.
2. Two or three in-context shots — the product styled in a scene, or in use.
3. One or two detail crops — texture, stitching, material, finish. See close-up product photography for ecommerce.
4. A scale or packaging shot — the most effective single way to cut "smaller than expected" returns.

Five to eight images per product is the range where the effort still pays. Beyond that you're mostly adding scroll. Why the images themselves move the number: AI product photos that help you sell more.

Fixing a catalog that's already inconsistent

Most stores don't start from zero. They start from several years of images uploaded at whatever size was convenient that day — and re-exporting those by hand is the job that never gets done.

1. Connect your store so Atelier reads your products and their existing images instead of you hand-uploading folders — Shopify, WooCommerce or Ecwid.
2. Build one template defining the framing, background and image count you want across the catalog. Walkthrough: how to add templates in Atelier.
3. Test on 10-20 products before committing. Iterating on a template costs cents; re-running 2,000 products costs you an afternoon.
4. Run it across the catalog as a single background task — how to bulk edit product photos in Atelier.
5. Review a sample per category before publishing. Colours, textures and proportions have to match the real product.

The longer version of this workflow, with what to shoot and how to define the look: how to make studio-quality product images in bulk. Shopify-specific: the complete guide to bulk image processing for Shopify stores.

Five mistakes worth checking for today

• Uploading below the zoom threshold. Under 1,000 px on Amazon or 1,600 px on eBay, zoom simply doesn't appear — and nobody tells you.
• Upscaling small images. Enlarging a 600 px photo to 2,048 px produces a soft, mushy result. Re-shoot or regenerate instead.
• Mixed aspect ratios in one collection. The most visible sign of an unmaintained catalog.
• Off-white "white" backgrounds. #FAFAFA looks white on your monitor and fails Amazon's 255,255,255 requirement.
• Maximum-quality exports. A 6 MB product image is slower, not better. Nobody has ever bought more because of quality 100.

Frequently asked questions