Resize a photo to a marketplace’s published spec.

What each preset is based on

• Amazon — no aspect ratio is published, so the preset uses a 2000 px square, comfortably above the 1,000 px on the longest side that switches zoom on and well under the 10,000 px ceiling. The white background requirement is Amazon’s exact RGB 255, 255, 255, which is why pure white is the default padding. Full Amazon requirements →
• Etsy — Etsy recommends at least 2,000 px in width and height, and warns that files over about 1 MB may not finish uploading. Those two pull against each other, which is what the quality slider is for. Full Etsy requirements →
• Shopify — 2048 × 2048 is Shopify’s own recommendation for square product images; the hard limits are 20 MB and 5000 × 5000 px. Full Shopify specs →
• Airbnb — Airbnb publishes a 1,024 × 683 minimum in its Help Centre and 1,200 × 800 in its Resource Centre, both 3:2, and says listing photos display in landscape. The preset uses 1600 × 1067 to clear both. Full Airbnb requirements →
• Uber Eats — item photos must sit between 5:4 and 6:4, with width 550–10,000 px, height 440–10,000 px and a 10 MB ceiling. The preset uses 1600 × 1280, which is 5:4 and clears the minimums with room to spare. Full delivery-app requirements →
• DoorDash — item photos are 16:9 with a 1,400 × 800 minimum, so the preset uses 1920 × 1080. The 230 × 230 figure quoted all over the web is DoorDash’s logo minimum, not the dish minimum. Full delivery-app requirements →

Uber Eats and DoorDash disagree on aspect ratio — 5:4–6:4 against 16:9 — so a single file cannot satisfy both. Run your photo through twice, once per preset, and crop rather than stretch.

Two platforms are deliberately missing. Meta publishes no image specification for Facebook Marketplace listings — every figure in circulation is from blog posts, so there’s nothing honest to check against. Vinted requires photos taken by you and states that no image editing is allowed, so resizing for it isn’t a service worth offering.

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