Marketplace Listing Photo Optimizer
Every marketplace publishes a different photo spec. The studio reads your source photos once, applies each selected marketplace's crop, resize and background rule, then exports a separate folder per platform, ready to drag into the listing editor.
JPG, PNG, WebP or HEIC. Up to 12 photos. Studio will pick the squarest one as your listing hero — you can swap it after.
Everything stays in your browser. No upload.
Up to 12 photos. The squarest, largest one is suggested as the hero. Swap any time.
Each one will get its own correctly-sized folder. Mix them; the renders run in parallel.
One zip containing a subfolder per marketplace. Hero is named 01 so it lands first in the editor.
Etsy's 2000 square, Amazon's 1600 on white, Shopify's 2048, eBay's 1600, Mercari's 1080, rendered together from a single set of source photos.
When Amazon is in the export list, the hero is cut out of its background and composited on pure white. Other marketplaces keep the original.
Each spec value links to the platform's own seller documentation, dated so you know when it was last verified.
The hero is the photo that appears in the marketplace's search result and at the top of the listing page. The table below summarises each marketplace's published rule, with the source linked and the verification date noted.
| Marketplace | Hero size | Aspect | Format | Max file | Background rule | Max photos | Source (verified) |
|---|---|---|---|---|---|---|---|
| Etsy | 2000 × 2000min 1000 × 1000 | 1:1 | JPEG, PNG | 20 MB | Any | 10 | Etsy seller handbook — photo size and qualityverified 2026-06 |
| Amazon | 1600 × 1600min 1000 × 1000 | 1:1 | JPEG | 10 MB | Pure white (255, 255, 255)No overlays on hero | 9 | Amazon Seller Central — product image requirementsverified 2026-06 |
| Shopify | 2048 × 2048min 800 × 800 | 1:1 | JPEG, PNG, WEBP | 20 MB | Any | 250 | Shopify Help Center — product mediaverified 2026-06 |
| eBay | 1600 × 1600min 500 × 500 | 1:1 | JPEG, PNG | 12 MB | Plain, lightNo overlays on hero | 24 | eBay seller center — picture guidelinesverified 2026-06 |
| Mercari | 1080 × 1080min 1080 × 1080 | 1:1 | JPEG, PNG | 5 MB | Any | 12 | Mercari help — taking good photosverified 2026-06 |
Selling on Mercari, Poshmark and eBay at once. One export run, three correctly-sized folders.
Reuse the same source photo for both. Amazon gets the white-background hero, Etsy keeps the original.
Drop the catalog photos in once and get a consistent 2048-square set every popular theme grids cleanly.
Take photos on your phone, drop them in, get listing-ready files without a Photoshop step.
A modern phone clears every marketplace's minimum with headroom. That headroom is what lets the studio render every spec sharply.
Search results show the hero at thumbnail size. The clearest single-product photo wins that slot.
A photo of the product next to a ruler answers the question you would otherwise get asked in a message.
Amazon and eBay both publish rules against added text or watermarks on the primary image.
Most cross-listers redo the same crop three or four times because each marketplace expects a different shape. This page exists because that step does not need to be manual. The sections below cover what each marketplace asks for and why the differences matter.
Etsy's seller handbook recommends 2000 pixels on the shortest side. The handbook frames this as a quality bar across the full display range, which spans a 230-px search thumbnail and a 1340-px hero on the listing page.
Amazon's product image guidelines require the main image to use a pure white background at RGB 255, 255, 255, with the product filling at least 85% of the frame and no added text, logos, watermarks or borders. The same guidelines call out 1000 pixels on the longest side as a minimum and reference enabling the zoom feature as the reason to go higher.
Shopify's documentation lists 4472 × 4472 and 20 MB as upper bounds. The theme (not Shopify itself) decides the displayed shape, and almost every Theme Store theme expects 1:1.
eBay's listing photo guidelines accept 500 pixels minimum and require no borders or added text on the primary photo. The supersize zoom feature is documented as requiring a larger image; 1600 on the longest side enables it.
Mercari's help center frames photos around the listing card, which is a 1:1 grid at 1080 pixels in the app.
The pixel sizes line up with each marketplace's reused image surfaces. Amazon's main image gets pulled into buybox cards, deal blocks and ad placements, so the rule enforces a consistent cut-out. Etsy's hero is shown across the largest range of contexts, from search thumbnail to pinch-zoom, so the spec is high. Mercari is a phone-first app and the surfaces are simpler, so the spec is lower.
The aspect ratios follow the search grid. Etsy, Shopify, eBay and Mercari all crop the hero to 1:1 for search. Cropping square up front means you decide what survives into the thumbnail rather than letting the platform's centre-crop policy decide.
The background rules follow the marketplace's brand position. Amazon enforces a clinical cut-out because the storefront is product-comparison-driven. Etsy and Mercari accept any background because the brand position is craft and resale, where context is part of the appeal.
It reads each photo's source dimensions, picks the squarest, largest one as the suggested hero, and applies each selected marketplace's crop and resize to every photo in parallel.
Each marketplace gets its own folder named after its id. The hero is named with a 01 prefix so it lands first when you drag the folder into the listing editor. Inside the folder is a short spec sheet for reference.
When Amazon is selected, the hero is cut out of its background and composited on pure white at 1600 × 1600 for that marketplace only. The Etsy, Shopify, eBay and Mercari heroes use the original background.
Three cross-listing workflows the optimizer covers in one upload.
A single item is being sold on three resale-friendly marketplaces.
Moving from Etsy to a Shopify storefront and reusing the existing Etsy photos.
Expanding an Etsy-only product onto Amazon.
Some categories diverge across marketplaces. The same product, sold on Etsy and Amazon, might need very different photo strategies.
Amazon requires the main image to show the garment on a live model. Etsy and Mercari accept flat-lay or hanger shots. Plan to shoot both versions.
Etsy's Vintage category (20+ years old) expects photos showing patina or wear. Amazon does not have an equivalent category-level rule; the standard main-image cut-out still applies.
Etsy accepts sample photos with a disclosure; Amazon and eBay expect the actual item being sold. Plan to disclose or re-shoot per marketplace.
Mercari and eBay often expect authentication photos for branded items. Plan two extra slots for serial numbers and maker's marks.
Honest answers to what people ask before using this tool.
Independent references if you want to go deeper on the formats and tradeoffs.
Each guide covers one marketplace's published rules and what they imply for the hero and gallery slots.
Hit an exact KB target if a tool downstream is stricter than a marketplace's per-image cap.
Manually swap a product background before bringing it into the studio.
One-off resize to an exact pixel size by hand.
Bulk resize a folder of catalog photos outside the studio.
Crop a single photo to a specific aspect outside the studio.
Confirm a photo's exact width and height before uploading.
Confirm a photo's KB or MB size against the marketplace's cap.
Strip location and camera metadata before listing personal items.
